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1802 lines
63 KiB
1802 lines
63 KiB
/*
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* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.swing.text.html;
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import java.awt.*;
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import java.util.BitSet;
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import java.util.Vector;
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import java.util.Arrays;
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import javax.swing.SizeRequirements;
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import javax.swing.event.DocumentEvent;
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import javax.swing.text.*;
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/**
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* HTML table view.
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*
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* @author Timothy Prinzing
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* @see View
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*/
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/*public*/ class TableView extends BoxView implements ViewFactory {
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/**
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* Constructs a TableView for the given element.
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*
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* @param elem the element that this view is responsible for
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*/
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public TableView(Element elem) {
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super(elem, View.Y_AXIS);
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rows = new Vector<RowView>();
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gridValid = false;
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captionIndex = -1;
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totalColumnRequirements = new SizeRequirements();
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}
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/**
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* Creates a new table row.
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*
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* @param elem an element
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* @return the row
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*/
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protected RowView createTableRow(Element elem) {
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// PENDING(prinz) need to add support for some of the other
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// elements, but for now just ignore anything that is not
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// a TR.
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Object o = elem.getAttributes().getAttribute(StyleConstants.NameAttribute);
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if (o == HTML.Tag.TR) {
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return new RowView(elem);
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}
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return null;
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}
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/**
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* The number of columns in the table.
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*/
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public int getColumnCount() {
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return columnSpans.length;
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}
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/**
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* Fetches the span (width) of the given column.
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* This is used by the nested cells to query the
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* sizes of grid locations outside of themselves.
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*/
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public int getColumnSpan(int col) {
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if (col < columnSpans.length) {
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return columnSpans[col];
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}
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return 0;
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}
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/**
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* The number of rows in the table.
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*/
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public int getRowCount() {
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return rows.size();
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}
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/**
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* Fetch the span of multiple rows. This includes
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* the border area.
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*/
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public int getMultiRowSpan(int row0, int row1) {
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RowView rv0 = getRow(row0);
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RowView rv1 = getRow(row1);
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if ((rv0 != null) && (rv1 != null)) {
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int index0 = rv0.viewIndex;
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int index1 = rv1.viewIndex;
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int span = getOffset(Y_AXIS, index1) - getOffset(Y_AXIS, index0) +
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getSpan(Y_AXIS, index1);
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return span;
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}
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return 0;
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}
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/**
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* Fetches the span (height) of the given row.
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*/
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public int getRowSpan(int row) {
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RowView rv = getRow(row);
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if (rv != null) {
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return getSpan(Y_AXIS, rv.viewIndex);
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}
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return 0;
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}
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RowView getRow(int row) {
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if (row < rows.size()) {
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return rows.elementAt(row);
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}
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return null;
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}
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protected View getViewAtPoint(int x, int y, Rectangle alloc) {
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int n = getViewCount();
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View v;
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Rectangle allocation = new Rectangle();
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for (int i = 0; i < n; i++) {
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allocation.setBounds(alloc);
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childAllocation(i, allocation);
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v = getView(i);
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if (v instanceof RowView) {
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v = ((RowView)v).findViewAtPoint(x, y, allocation);
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if (v != null) {
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alloc.setBounds(allocation);
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return v;
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}
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}
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}
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return super.getViewAtPoint(x, y, alloc);
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}
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/**
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* Determines the number of columns occupied by
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* the table cell represented by given element.
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*/
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protected int getColumnsOccupied(View v) {
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AttributeSet a = v.getElement().getAttributes();
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if (a.isDefined(HTML.Attribute.COLSPAN)) {
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String s = (String) a.getAttribute(HTML.Attribute.COLSPAN);
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if (s != null) {
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try {
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return Integer.parseInt(s);
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} catch (NumberFormatException nfe) {
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// fall through to one column
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}
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}
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}
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return 1;
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}
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/**
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* Determines the number of rows occupied by
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* the table cell represented by given element.
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*/
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protected int getRowsOccupied(View v) {
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AttributeSet a = v.getElement().getAttributes();
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if (a.isDefined(HTML.Attribute.ROWSPAN)) {
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String s = (String) a.getAttribute(HTML.Attribute.ROWSPAN);
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if (s != null) {
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try {
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return Integer.parseInt(s);
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} catch (NumberFormatException nfe) {
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// fall through to one row
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}
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}
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}
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return 1;
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}
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protected void invalidateGrid() {
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gridValid = false;
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}
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protected StyleSheet getStyleSheet() {
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HTMLDocument doc = (HTMLDocument) getDocument();
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return doc.getStyleSheet();
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}
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/**
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* Update the insets, which contain the caption if there
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* is a caption.
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*/
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void updateInsets() {
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short top = (short) painter.getInset(TOP, this);
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short bottom = (short) painter.getInset(BOTTOM, this);
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if (captionIndex != -1) {
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View caption = getView(captionIndex);
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short h = (short) caption.getPreferredSpan(Y_AXIS);
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AttributeSet a = caption.getAttributes();
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Object align = a.getAttribute(CSS.Attribute.CAPTION_SIDE);
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if ((align != null) && (align.equals("bottom"))) {
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bottom += h;
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} else {
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top += h;
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}
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}
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setInsets(top, (short) painter.getInset(LEFT, this),
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bottom, (short) painter.getInset(RIGHT, this));
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}
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/**
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* Update any cached values that come from attributes.
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*/
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protected void setPropertiesFromAttributes() {
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StyleSheet sheet = getStyleSheet();
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attr = sheet.getViewAttributes(this);
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painter = sheet.getBoxPainter(attr);
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if (attr != null) {
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setInsets((short) painter.getInset(TOP, this),
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(short) painter.getInset(LEFT, this),
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(short) painter.getInset(BOTTOM, this),
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(short) painter.getInset(RIGHT, this));
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CSS.LengthValue lv = (CSS.LengthValue)
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attr.getAttribute(CSS.Attribute.BORDER_SPACING);
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if (lv != null) {
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cellSpacing = (int) lv.getValue();
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} else {
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// Default cell spacing equals 2
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cellSpacing = 2;
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}
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lv = (CSS.LengthValue)
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attr.getAttribute(CSS.Attribute.BORDER_TOP_WIDTH);
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if (lv != null) {
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borderWidth = (int) lv.getValue();
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} else {
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borderWidth = 0;
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}
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}
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}
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/**
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* Fill in the grid locations that are placeholders
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* for multi-column, multi-row, and missing grid
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* locations.
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*/
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void updateGrid() {
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if (! gridValid) {
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relativeCells = false;
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multiRowCells = false;
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// determine which views are table rows and clear out
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// grid points marked filled.
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captionIndex = -1;
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rows.removeAllElements();
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int n = getViewCount();
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for (int i = 0; i < n; i++) {
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View v = getView(i);
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if (v instanceof RowView) {
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rows.addElement((RowView) v);
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RowView rv = (RowView) v;
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rv.clearFilledColumns();
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rv.rowIndex = rows.size() - 1;
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rv.viewIndex = i;
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} else {
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Object o = v.getElement().getAttributes().getAttribute(StyleConstants.NameAttribute);
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if (o instanceof HTML.Tag) {
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HTML.Tag kind = (HTML.Tag) o;
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if (kind == HTML.Tag.CAPTION) {
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captionIndex = i;
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}
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}
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}
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}
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int maxColumns = 0;
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int nrows = rows.size();
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for (int row = 0; row < nrows; row++) {
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RowView rv = getRow(row);
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int col = 0;
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for (int cell = 0; cell < rv.getViewCount(); cell++, col++) {
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View cv = rv.getView(cell);
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if (! relativeCells) {
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AttributeSet a = cv.getAttributes();
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CSS.LengthValue lv = (CSS.LengthValue)
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a.getAttribute(CSS.Attribute.WIDTH);
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if ((lv != null) && (lv.isPercentage())) {
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relativeCells = true;
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}
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}
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// advance to a free column
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for (; rv.isFilled(col); col++);
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int rowSpan = getRowsOccupied(cv);
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if (rowSpan > 1) {
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multiRowCells = true;
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}
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int colSpan = getColumnsOccupied(cv);
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if ((colSpan > 1) || (rowSpan > 1)) {
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// fill in the overflow entries for this cell
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int rowLimit = row + rowSpan;
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int colLimit = col + colSpan;
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for (int i = row; i < rowLimit; i++) {
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for (int j = col; j < colLimit; j++) {
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if (i != row || j != col) {
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addFill(i, j);
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}
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}
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}
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if (colSpan > 1) {
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col += colSpan - 1;
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}
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}
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}
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maxColumns = Math.max(maxColumns, col);
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}
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// setup the column layout/requirements
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columnSpans = new int[maxColumns];
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columnOffsets = new int[maxColumns];
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columnRequirements = new SizeRequirements[maxColumns];
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for (int i = 0; i < maxColumns; i++) {
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columnRequirements[i] = new SizeRequirements();
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columnRequirements[i].maximum = Integer.MAX_VALUE;
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}
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gridValid = true;
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}
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}
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/**
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* Mark a grid location as filled in for a cells overflow.
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*/
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void addFill(int row, int col) {
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RowView rv = getRow(row);
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if (rv != null) {
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rv.fillColumn(col);
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}
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}
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/**
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* Layout the columns to fit within the given target span.
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*
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* @param targetSpan the given span for total of all the table
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* columns
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* @param reqs the requirements desired for each column. This
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* is the column maximum of the cells minimum, preferred, and
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* maximum requested span
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* @param spans the return value of how much to allocated to
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* each column
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* @param offsets the return value of the offset from the
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* origin for each column
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* @return the offset from the origin and the span for each column
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* in the offsets and spans parameters
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*/
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protected void layoutColumns(int targetSpan, int[] offsets, int[] spans,
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SizeRequirements[] reqs) {
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//clean offsets and spans
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Arrays.fill(offsets, 0);
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Arrays.fill(spans, 0);
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colIterator.setLayoutArrays(offsets, spans, targetSpan);
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CSS.calculateTiledLayout(colIterator, targetSpan);
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}
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/**
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* Calculate the requirements for each column. The calculation
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* is done as two passes over the table. The table cells that
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* occupy a single column are scanned first to determine the
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* maximum of minimum, preferred, and maximum spans along the
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* give axis. Table cells that span multiple columns are excluded
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* from the first pass. A second pass is made to determine if
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* the cells that span multiple columns are satisfied. If the
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* column requirements are not satisified, the needs of the
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* multi-column cell is mixed into the existing column requirements.
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* The calculation of the multi-column distribution is based upon
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* the proportions of the existing column requirements and taking
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* into consideration any constraining maximums.
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*/
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void calculateColumnRequirements(int axis) {
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// clean columnRequirements
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for (SizeRequirements req : columnRequirements) {
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req.minimum = 0;
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req.preferred = 0;
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req.maximum = Integer.MAX_VALUE;
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}
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Container host = getContainer();
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if (host != null) {
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if (host instanceof JTextComponent) {
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skipComments = !((JTextComponent)host).isEditable();
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} else {
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skipComments = true;
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}
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}
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// pass 1 - single column cells
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boolean hasMultiColumn = false;
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int nrows = getRowCount();
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for (int i = 0; i < nrows; i++) {
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RowView row = getRow(i);
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int col = 0;
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int ncells = row.getViewCount();
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for (int cell = 0; cell < ncells; cell++) {
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View cv = row.getView(cell);
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if (skipComments && !(cv instanceof CellView)) {
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continue;
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}
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for (; row.isFilled(col); col++); // advance to a free column
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int rowSpan = getRowsOccupied(cv);
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int colSpan = getColumnsOccupied(cv);
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if (colSpan == 1) {
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checkSingleColumnCell(axis, col, cv);
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} else {
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hasMultiColumn = true;
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col += colSpan - 1;
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}
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col++;
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}
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}
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// pass 2 - multi-column cells
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if (hasMultiColumn) {
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for (int i = 0; i < nrows; i++) {
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RowView row = getRow(i);
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int col = 0;
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int ncells = row.getViewCount();
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for (int cell = 0; cell < ncells; cell++) {
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View cv = row.getView(cell);
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if (skipComments && !(cv instanceof CellView)) {
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continue;
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}
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for (; row.isFilled(col); col++); // advance to a free column
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int colSpan = getColumnsOccupied(cv);
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if (colSpan > 1) {
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checkMultiColumnCell(axis, col, colSpan, cv);
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col += colSpan - 1;
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}
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col++;
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}
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}
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}
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}
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/**
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* check the requirements of a table cell that spans a single column.
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*/
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void checkSingleColumnCell(int axis, int col, View v) {
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SizeRequirements req = columnRequirements[col];
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req.minimum = Math.max((int) v.getMinimumSpan(axis), req.minimum);
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req.preferred = Math.max((int) v.getPreferredSpan(axis), req.preferred);
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}
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/**
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* check the requirements of a table cell that spans multiple
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* columns.
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*/
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void checkMultiColumnCell(int axis, int col, int ncols, View v) {
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// calculate the totals
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long min = 0;
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long pref = 0;
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long max = 0;
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for (int i = 0; i < ncols; i++) {
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SizeRequirements req = columnRequirements[col + i];
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min += req.minimum;
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pref += req.preferred;
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max += req.maximum;
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}
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// check if the minimum size needs adjustment.
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int cmin = (int) v.getMinimumSpan(axis);
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if (cmin > min) {
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/*
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* the columns that this cell spans need adjustment to fit
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* this table cell.... calculate the adjustments.
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*/
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SizeRequirements[] reqs = new SizeRequirements[ncols];
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for (int i = 0; i < ncols; i++) {
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reqs[i] = columnRequirements[col + i];
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}
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int[] spans = new int[ncols];
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int[] offsets = new int[ncols];
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SizeRequirements.calculateTiledPositions(cmin, null, reqs,
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offsets, spans);
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// apply the adjustments
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for (int i = 0; i < ncols; i++) {
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SizeRequirements req = reqs[i];
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req.minimum = Math.max(spans[i], req.minimum);
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req.preferred = Math.max(req.minimum, req.preferred);
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req.maximum = Math.max(req.preferred, req.maximum);
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}
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}
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// check if the preferred size needs adjustment.
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int cpref = (int) v.getPreferredSpan(axis);
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if (cpref > pref) {
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/*
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* the columns that this cell spans need adjustment to fit
|
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* this table cell.... calculate the adjustments.
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*/
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SizeRequirements[] reqs = new SizeRequirements[ncols];
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for (int i = 0; i < ncols; i++) {
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reqs[i] = columnRequirements[col + i];
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}
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int[] spans = new int[ncols];
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int[] offsets = new int[ncols];
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SizeRequirements.calculateTiledPositions(cpref, null, reqs,
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offsets, spans);
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// apply the adjustments
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for (int i = 0; i < ncols; i++) {
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SizeRequirements req = reqs[i];
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req.preferred = Math.max(spans[i], req.preferred);
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req.maximum = Math.max(req.preferred, req.maximum);
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}
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}
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}
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|
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// --- BoxView methods -----------------------------------------
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/**
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* Calculate the requirements for the minor axis. This is called by
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* the superclass whenever the requirements need to be updated (i.e.
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* a preferenceChanged was messaged through this view).
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|
* <p>
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|
* This is implemented to calculate the requirements as the sum of the
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* requirements of the columns and then adjust it if the
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* CSS width or height attribute is specified and applicable to
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* the axis.
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|
*/
|
|
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) {
|
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updateGrid();
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|
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// calculate column requirements for each column
|
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calculateColumnRequirements(axis);
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|
|
|
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// the requirements are the sum of the columns.
|
|
if (r == null) {
|
|
r = new SizeRequirements();
|
|
}
|
|
long min = 0;
|
|
long pref = 0;
|
|
int n = columnRequirements.length;
|
|
for (int i = 0; i < n; i++) {
|
|
SizeRequirements req = columnRequirements[i];
|
|
min += req.minimum;
|
|
pref += req.preferred;
|
|
}
|
|
int adjust = (n + 1) * cellSpacing + 2 * borderWidth;
|
|
min += adjust;
|
|
pref += adjust;
|
|
r.minimum = (int) min;
|
|
r.preferred = (int) pref;
|
|
r.maximum = (int) pref;
|
|
|
|
|
|
AttributeSet attr = getAttributes();
|
|
CSS.LengthValue cssWidth = (CSS.LengthValue)attr.getAttribute(
|
|
CSS.Attribute.WIDTH);
|
|
|
|
if (BlockView.spanSetFromAttributes(axis, r, cssWidth, null)) {
|
|
if (r.minimum < (int)min) {
|
|
// The user has requested a smaller size than is needed to
|
|
// show the table, override it.
|
|
r.maximum = r.minimum = r.preferred = (int) min;
|
|
}
|
|
}
|
|
totalColumnRequirements.minimum = r.minimum;
|
|
totalColumnRequirements.preferred = r.preferred;
|
|
totalColumnRequirements.maximum = r.maximum;
|
|
|
|
// set the alignment
|
|
Object o = attr.getAttribute(CSS.Attribute.TEXT_ALIGN);
|
|
if (o != null) {
|
|
// set horizontal alignment
|
|
String ta = o.toString();
|
|
if (ta.equals("left")) {
|
|
r.alignment = 0;
|
|
} else if (ta.equals("center")) {
|
|
r.alignment = 0.5f;
|
|
} else if (ta.equals("right")) {
|
|
r.alignment = 1;
|
|
} else {
|
|
r.alignment = 0;
|
|
}
|
|
} else {
|
|
r.alignment = 0;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* Calculate the requirements for the major axis. This is called by
|
|
* the superclass whenever the requirements need to be updated (i.e.
|
|
* a preferenceChanged was messaged through this view).
|
|
* <p>
|
|
* This is implemented to provide the superclass behavior adjusted for
|
|
* multi-row table cells.
|
|
*/
|
|
protected SizeRequirements calculateMajorAxisRequirements(int axis, SizeRequirements r) {
|
|
updateInsets();
|
|
rowIterator.updateAdjustments();
|
|
r = CSS.calculateTiledRequirements(rowIterator, r);
|
|
r.maximum = r.preferred;
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* Perform layout for the minor axis of the box (i.e. the
|
|
* axis orthogonal to the axis that it represents). The results
|
|
* of the layout should be placed in the given arrays which represent
|
|
* the allocations to the children along the minor axis. This
|
|
* is called by the superclass whenever the layout needs to be
|
|
* updated along the minor axis.
|
|
* <p>
|
|
* This is implemented to call the
|
|
* <a href="#layoutColumns">layoutColumns</a> method, and then
|
|
* forward to the superclass to actually carry out the layout
|
|
* of the tables rows.
|
|
*
|
|
* @param targetSpan the total span given to the view, which
|
|
* would be used to layout the children
|
|
* @param axis the axis being layed out
|
|
* @param offsets the offsets from the origin of the view for
|
|
* each of the child views. This is a return value and is
|
|
* filled in by the implementation of this method
|
|
* @param spans the span of each child view; this is a return
|
|
* value and is filled in by the implementation of this method
|
|
* @return the offset and span for each child view in the
|
|
* offsets and spans parameters
|
|
*/
|
|
protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) {
|
|
// make grid is properly represented
|
|
updateGrid();
|
|
|
|
// all of the row layouts are invalid, so mark them that way
|
|
int n = getRowCount();
|
|
for (int i = 0; i < n; i++) {
|
|
RowView row = getRow(i);
|
|
row.layoutChanged(axis);
|
|
}
|
|
|
|
// calculate column spans
|
|
layoutColumns(targetSpan, columnOffsets, columnSpans, columnRequirements);
|
|
|
|
// continue normal layout
|
|
super.layoutMinorAxis(targetSpan, axis, offsets, spans);
|
|
}
|
|
|
|
|
|
/**
|
|
* Perform layout for the major axis of the box (i.e. the
|
|
* axis that it represents). The results
|
|
* of the layout should be placed in the given arrays which represent
|
|
* the allocations to the children along the minor axis. This
|
|
* is called by the superclass whenever the layout needs to be
|
|
* updated along the minor axis.
|
|
* <p>
|
|
* This method is where the layout of the table rows within the
|
|
* table takes place. This method is implemented to call the use
|
|
* the RowIterator and the CSS collapsing tile to layout
|
|
* with border spacing and border collapsing capabilities.
|
|
*
|
|
* @param targetSpan the total span given to the view, which
|
|
* would be used to layout the children
|
|
* @param axis the axis being layed out
|
|
* @param offsets the offsets from the origin of the view for
|
|
* each of the child views; this is a return value and is
|
|
* filled in by the implementation of this method
|
|
* @param spans the span of each child view; this is a return
|
|
* value and is filled in by the implementation of this method
|
|
* @return the offset and span for each child view in the
|
|
* offsets and spans parameters
|
|
*/
|
|
protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) {
|
|
rowIterator.setLayoutArrays(offsets, spans);
|
|
CSS.calculateTiledLayout(rowIterator, targetSpan);
|
|
|
|
if (captionIndex != -1) {
|
|
// place the caption
|
|
View caption = getView(captionIndex);
|
|
int h = (int) caption.getPreferredSpan(Y_AXIS);
|
|
spans[captionIndex] = h;
|
|
short boxBottom = (short) painter.getInset(BOTTOM, this);
|
|
if (boxBottom != getBottomInset()) {
|
|
offsets[captionIndex] = targetSpan + boxBottom;
|
|
} else {
|
|
offsets[captionIndex] = - getTopInset();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetches the child view that represents the given position in
|
|
* the model. This is implemented to walk through the children
|
|
* looking for a range that contains the given position. In this
|
|
* view the children do not necessarily have a one to one mapping
|
|
* with the child elements.
|
|
*
|
|
* @param pos the search position >= 0
|
|
* @param a the allocation to the table on entry, and the
|
|
* allocation of the view containing the position on exit
|
|
* @return the view representing the given position, or
|
|
* null if there isn't one
|
|
*/
|
|
protected View getViewAtPosition(int pos, Rectangle a) {
|
|
int n = getViewCount();
|
|
for (int i = 0; i < n; i++) {
|
|
View v = getView(i);
|
|
int p0 = v.getStartOffset();
|
|
int p1 = v.getEndOffset();
|
|
if ((pos >= p0) && (pos < p1)) {
|
|
// it's in this view.
|
|
if (a != null) {
|
|
childAllocation(i, a);
|
|
}
|
|
return v;
|
|
}
|
|
}
|
|
if (pos == getEndOffset()) {
|
|
View v = getView(n - 1);
|
|
if (a != null) {
|
|
this.childAllocation(n - 1, a);
|
|
}
|
|
return v;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// --- View methods ---------------------------------------------
|
|
|
|
/**
|
|
* Fetches the attributes to use when rendering. This is
|
|
* implemented to multiplex the attributes specified in the
|
|
* model with a StyleSheet.
|
|
*/
|
|
public AttributeSet getAttributes() {
|
|
if (attr == null) {
|
|
StyleSheet sheet = getStyleSheet();
|
|
attr = sheet.getViewAttributes(this);
|
|
}
|
|
return attr;
|
|
}
|
|
|
|
/**
|
|
* Renders using the given rendering surface and area on that
|
|
* surface. This is implemented to delegate to the css box
|
|
* painter to paint the border and background prior to the
|
|
* interior. The superclass culls rendering the children
|
|
* that don't directly intersect the clip and the row may
|
|
* have cells hanging from a row above in it. The table
|
|
* does not use the superclass rendering behavior and instead
|
|
* paints all of the rows and lets the rows cull those
|
|
* cells not intersecting the clip region.
|
|
*
|
|
* @param g the rendering surface to use
|
|
* @param allocation the allocated region to render into
|
|
* @see View#paint
|
|
*/
|
|
public void paint(Graphics g, Shape allocation) {
|
|
// paint the border
|
|
Rectangle a = allocation.getBounds();
|
|
setSize(a.width, a.height);
|
|
if (captionIndex != -1) {
|
|
// adjust the border for the caption
|
|
short top = (short) painter.getInset(TOP, this);
|
|
short bottom = (short) painter.getInset(BOTTOM, this);
|
|
if (top != getTopInset()) {
|
|
int h = getTopInset() - top;
|
|
a.y += h;
|
|
a.height -= h;
|
|
} else {
|
|
a.height -= getBottomInset() - bottom;
|
|
}
|
|
}
|
|
painter.paint(g, a.x, a.y, a.width, a.height, this);
|
|
// paint interior
|
|
int n = getViewCount();
|
|
for (int i = 0; i < n; i++) {
|
|
View v = getView(i);
|
|
v.paint(g, getChildAllocation(i, allocation));
|
|
}
|
|
//super.paint(g, a);
|
|
}
|
|
|
|
/**
|
|
* Establishes the parent view for this view. This is
|
|
* guaranteed to be called before any other methods if the
|
|
* parent view is functioning properly.
|
|
* <p>
|
|
* This is implemented
|
|
* to forward to the superclass as well as call the
|
|
* <a href="#setPropertiesFromAttributes">setPropertiesFromAttributes</a>
|
|
* method to set the paragraph properties from the css
|
|
* attributes. The call is made at this time to ensure
|
|
* the ability to resolve upward through the parents
|
|
* view attributes.
|
|
*
|
|
* @param parent the new parent, or null if the view is
|
|
* being removed from a parent it was previously added
|
|
* to
|
|
*/
|
|
public void setParent(View parent) {
|
|
super.setParent(parent);
|
|
if (parent != null) {
|
|
setPropertiesFromAttributes();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fetches the ViewFactory implementation that is feeding
|
|
* the view hierarchy.
|
|
* This replaces the ViewFactory with an implementation that
|
|
* calls through to the createTableRow and createTableCell
|
|
* methods. If the element given to the factory isn't a
|
|
* table row or cell, the request is delegated to the factory
|
|
* produced by the superclass behavior.
|
|
*
|
|
* @return the factory, null if none
|
|
*/
|
|
public ViewFactory getViewFactory() {
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Gives notification that something was inserted into
|
|
* the document in a location that this view is responsible for.
|
|
* This replaces the ViewFactory with an implementation that
|
|
* calls through to the createTableRow and createTableCell
|
|
* methods. If the element given to the factory isn't a
|
|
* table row or cell, the request is delegated to the factory
|
|
* passed as an argument.
|
|
*
|
|
* @param e the change information from the associated document
|
|
* @param a the current allocation of the view
|
|
* @param f the factory to use to rebuild if the view has children
|
|
* @see View#insertUpdate
|
|
*/
|
|
public void insertUpdate(DocumentEvent e, Shape a, ViewFactory f) {
|
|
super.insertUpdate(e, a, this);
|
|
}
|
|
|
|
/**
|
|
* Gives notification that something was removed from the document
|
|
* in a location that this view is responsible for.
|
|
* This replaces the ViewFactory with an implementation that
|
|
* calls through to the createTableRow and createTableCell
|
|
* methods. If the element given to the factory isn't a
|
|
* table row or cell, the request is delegated to the factory
|
|
* passed as an argument.
|
|
*
|
|
* @param e the change information from the associated document
|
|
* @param a the current allocation of the view
|
|
* @param f the factory to use to rebuild if the view has children
|
|
* @see View#removeUpdate
|
|
*/
|
|
public void removeUpdate(DocumentEvent e, Shape a, ViewFactory f) {
|
|
super.removeUpdate(e, a, this);
|
|
}
|
|
|
|
/**
|
|
* Gives notification from the document that attributes were changed
|
|
* in a location that this view is responsible for.
|
|
* This replaces the ViewFactory with an implementation that
|
|
* calls through to the createTableRow and createTableCell
|
|
* methods. If the element given to the factory isn't a
|
|
* table row or cell, the request is delegated to the factory
|
|
* passed as an argument.
|
|
*
|
|
* @param e the change information from the associated document
|
|
* @param a the current allocation of the view
|
|
* @param f the factory to use to rebuild if the view has children
|
|
* @see View#changedUpdate
|
|
*/
|
|
public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) {
|
|
super.changedUpdate(e, a, this);
|
|
}
|
|
|
|
protected void forwardUpdate(DocumentEvent.ElementChange ec,
|
|
DocumentEvent e, Shape a, ViewFactory f) {
|
|
super.forwardUpdate(ec, e, a, f);
|
|
// A change in any of the table cells usually effects the whole table,
|
|
// so redraw it all!
|
|
if (a != null) {
|
|
Component c = getContainer();
|
|
if (c != null) {
|
|
Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a :
|
|
a.getBounds();
|
|
c.repaint(alloc.x, alloc.y, alloc.width, alloc.height);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Change the child views. This is implemented to
|
|
* provide the superclass behavior and invalidate the
|
|
* grid so that rows and columns will be recalculated.
|
|
*/
|
|
public void replace(int offset, int length, View[] views) {
|
|
super.replace(offset, length, views);
|
|
invalidateGrid();
|
|
}
|
|
|
|
// --- ViewFactory methods ------------------------------------------
|
|
|
|
/**
|
|
* The table itself acts as a factory for the various
|
|
* views that actually represent pieces of the table.
|
|
* All other factory activity is delegated to the factory
|
|
* returned by the parent of the table.
|
|
*/
|
|
public View create(Element elem) {
|
|
Object o = elem.getAttributes().getAttribute(StyleConstants.NameAttribute);
|
|
if (o instanceof HTML.Tag) {
|
|
HTML.Tag kind = (HTML.Tag) o;
|
|
if (kind == HTML.Tag.TR) {
|
|
return createTableRow(elem);
|
|
} else if ((kind == HTML.Tag.TD) || (kind == HTML.Tag.TH)) {
|
|
return new CellView(elem);
|
|
} else if (kind == HTML.Tag.CAPTION) {
|
|
return new javax.swing.text.html.ParagraphView(elem);
|
|
}
|
|
}
|
|
// default is to delegate to the normal factory
|
|
View p = getParent();
|
|
if (p != null) {
|
|
ViewFactory f = p.getViewFactory();
|
|
if (f != null) {
|
|
return f.create(elem);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// ---- variables ----------------------------------------------------
|
|
|
|
private AttributeSet attr;
|
|
private StyleSheet.BoxPainter painter;
|
|
|
|
private int cellSpacing;
|
|
private int borderWidth;
|
|
|
|
/**
|
|
* The index of the caption view if there is a caption.
|
|
* This has a value of -1 if there is no caption. The
|
|
* caption lives in the inset area of the table, and is
|
|
* updated with each time the grid is recalculated.
|
|
*/
|
|
private int captionIndex;
|
|
|
|
/**
|
|
* Do any of the table cells contain a relative size
|
|
* specification? This is updated with each call to
|
|
* updateGrid(). If this is true, the ColumnIterator
|
|
* will do extra work to calculate relative cell
|
|
* specifications.
|
|
*/
|
|
private boolean relativeCells;
|
|
|
|
/**
|
|
* Do any of the table cells span multiple rows? If
|
|
* true, the RowRequirementIterator will do additional
|
|
* work to adjust the requirements of rows spanned by
|
|
* a single table cell. This is updated with each call to
|
|
* updateGrid().
|
|
*/
|
|
private boolean multiRowCells;
|
|
|
|
int[] columnSpans;
|
|
int[] columnOffsets;
|
|
/**
|
|
* SizeRequirements for all the columns.
|
|
*/
|
|
SizeRequirements totalColumnRequirements;
|
|
SizeRequirements[] columnRequirements;
|
|
|
|
RowIterator rowIterator = new RowIterator();
|
|
ColumnIterator colIterator = new ColumnIterator();
|
|
|
|
Vector<RowView> rows;
|
|
|
|
// whether to display comments inside table or not.
|
|
boolean skipComments = false;
|
|
|
|
boolean gridValid;
|
|
static final private BitSet EMPTY = new BitSet();
|
|
|
|
class ColumnIterator implements CSS.LayoutIterator {
|
|
|
|
/**
|
|
* Disable percentage adjustments which should only apply
|
|
* when calculating layout, not requirements.
|
|
*/
|
|
void disablePercentages() {
|
|
percentages = null;
|
|
}
|
|
|
|
/**
|
|
* Update percentage adjustments if they are needed.
|
|
*/
|
|
private void updatePercentagesAndAdjustmentWeights(int span) {
|
|
adjustmentWeights = new int[columnRequirements.length];
|
|
for (int i = 0; i < columnRequirements.length; i++) {
|
|
adjustmentWeights[i] = 0;
|
|
}
|
|
if (relativeCells) {
|
|
percentages = new int[columnRequirements.length];
|
|
} else {
|
|
percentages = null;
|
|
}
|
|
int nrows = getRowCount();
|
|
for (int rowIndex = 0; rowIndex < nrows; rowIndex++) {
|
|
RowView row = getRow(rowIndex);
|
|
int col = 0;
|
|
int ncells = row.getViewCount();
|
|
for (int cell = 0; cell < ncells; cell++, col++) {
|
|
View cv = row.getView(cell);
|
|
for (; row.isFilled(col); col++); // advance to a free column
|
|
int rowSpan = getRowsOccupied(cv);
|
|
int colSpan = getColumnsOccupied(cv);
|
|
AttributeSet a = cv.getAttributes();
|
|
CSS.LengthValue lv = (CSS.LengthValue)
|
|
a.getAttribute(CSS.Attribute.WIDTH);
|
|
if ( lv != null ) {
|
|
int len = (int) (lv.getValue(span) / colSpan + 0.5f);
|
|
for (int i = 0; i < colSpan; i++) {
|
|
if (lv.isPercentage()) {
|
|
// add a percentage requirement
|
|
percentages[col+i] = Math.max(percentages[col+i], len);
|
|
adjustmentWeights[col + i] = Math.max(adjustmentWeights[col + i], WorstAdjustmentWeight);
|
|
} else {
|
|
adjustmentWeights[col + i] = Math.max(adjustmentWeights[col + i], WorstAdjustmentWeight - 1);
|
|
}
|
|
}
|
|
}
|
|
col += colSpan - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the layout arrays to use for holding layout results
|
|
*/
|
|
public void setLayoutArrays(int offsets[], int spans[], int targetSpan) {
|
|
this.offsets = offsets;
|
|
this.spans = spans;
|
|
updatePercentagesAndAdjustmentWeights(targetSpan);
|
|
}
|
|
|
|
// --- RequirementIterator methods -------------------
|
|
|
|
public int getCount() {
|
|
return columnRequirements.length;
|
|
}
|
|
|
|
public void setIndex(int i) {
|
|
col = i;
|
|
}
|
|
|
|
public void setOffset(int offs) {
|
|
offsets[col] = offs;
|
|
}
|
|
|
|
public int getOffset() {
|
|
return offsets[col];
|
|
}
|
|
|
|
public void setSpan(int span) {
|
|
spans[col] = span;
|
|
}
|
|
|
|
public int getSpan() {
|
|
return spans[col];
|
|
}
|
|
|
|
public float getMinimumSpan(float parentSpan) {
|
|
// do not care for percentages, since min span can't
|
|
// be less than columnRequirements[col].minimum,
|
|
// but can be less than percentage value.
|
|
return columnRequirements[col].minimum;
|
|
}
|
|
|
|
public float getPreferredSpan(float parentSpan) {
|
|
if ((percentages != null) && (percentages[col] != 0)) {
|
|
return Math.max(percentages[col], columnRequirements[col].minimum);
|
|
}
|
|
return columnRequirements[col].preferred;
|
|
}
|
|
|
|
public float getMaximumSpan(float parentSpan) {
|
|
return columnRequirements[col].maximum;
|
|
}
|
|
|
|
public float getBorderWidth() {
|
|
return borderWidth;
|
|
}
|
|
|
|
|
|
public float getLeadingCollapseSpan() {
|
|
return cellSpacing;
|
|
}
|
|
|
|
public float getTrailingCollapseSpan() {
|
|
return cellSpacing;
|
|
}
|
|
|
|
public int getAdjustmentWeight() {
|
|
return adjustmentWeights[col];
|
|
}
|
|
|
|
/**
|
|
* Current column index
|
|
*/
|
|
private int col;
|
|
|
|
/**
|
|
* percentage values (may be null since there
|
|
* might not be any).
|
|
*/
|
|
private int[] percentages;
|
|
|
|
private int[] adjustmentWeights;
|
|
|
|
private int[] offsets;
|
|
private int[] spans;
|
|
}
|
|
|
|
class RowIterator implements CSS.LayoutIterator {
|
|
|
|
RowIterator() {
|
|
}
|
|
|
|
void updateAdjustments() {
|
|
int axis = Y_AXIS;
|
|
if (multiRowCells) {
|
|
// adjust requirements of multi-row cells
|
|
int n = getRowCount();
|
|
adjustments = new int[n];
|
|
for (int i = 0; i < n; i++) {
|
|
RowView rv = getRow(i);
|
|
if (rv.multiRowCells == true) {
|
|
int ncells = rv.getViewCount();
|
|
for (int j = 0; j < ncells; j++) {
|
|
View v = rv.getView(j);
|
|
int nrows = getRowsOccupied(v);
|
|
if (nrows > 1) {
|
|
int spanNeeded = (int) v.getPreferredSpan(axis);
|
|
adjustMultiRowSpan(spanNeeded, nrows, i);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
adjustments = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fixup preferences to accommodate a multi-row table cell
|
|
* if not already covered by existing preferences. This is
|
|
* a no-op if not all of the rows needed (to do this check/fixup)
|
|
* have arrived yet.
|
|
*/
|
|
void adjustMultiRowSpan(int spanNeeded, int nrows, int rowIndex) {
|
|
if ((rowIndex + nrows) > getCount()) {
|
|
// rows are missing (could be a bad rowspan specification)
|
|
// or not all the rows have arrived. Do the best we can with
|
|
// the current set of rows.
|
|
nrows = getCount() - rowIndex;
|
|
if (nrows < 1) {
|
|
return;
|
|
}
|
|
}
|
|
int span = 0;
|
|
for (int i = 0; i < nrows; i++) {
|
|
RowView rv = getRow(rowIndex + i);
|
|
span += rv.getPreferredSpan(Y_AXIS);
|
|
}
|
|
if (spanNeeded > span) {
|
|
int adjust = (spanNeeded - span);
|
|
int rowAdjust = adjust / nrows;
|
|
int firstAdjust = rowAdjust + (adjust - (rowAdjust * nrows));
|
|
RowView rv = getRow(rowIndex);
|
|
adjustments[rowIndex] = Math.max(adjustments[rowIndex],
|
|
firstAdjust);
|
|
for (int i = 1; i < nrows; i++) {
|
|
adjustments[rowIndex + i] = Math.max(
|
|
adjustments[rowIndex + i], rowAdjust);
|
|
}
|
|
}
|
|
}
|
|
|
|
void setLayoutArrays(int[] offsets, int[] spans) {
|
|
this.offsets = offsets;
|
|
this.spans = spans;
|
|
}
|
|
|
|
// --- RequirementIterator methods -------------------
|
|
|
|
public void setOffset(int offs) {
|
|
RowView rv = getRow(row);
|
|
if (rv != null) {
|
|
offsets[rv.viewIndex] = offs;
|
|
}
|
|
}
|
|
|
|
public int getOffset() {
|
|
RowView rv = getRow(row);
|
|
if (rv != null) {
|
|
return offsets[rv.viewIndex];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
public void setSpan(int span) {
|
|
RowView rv = getRow(row);
|
|
if (rv != null) {
|
|
spans[rv.viewIndex] = span;
|
|
}
|
|
}
|
|
|
|
public int getSpan() {
|
|
RowView rv = getRow(row);
|
|
if (rv != null) {
|
|
return spans[rv.viewIndex];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
public int getCount() {
|
|
return rows.size();
|
|
}
|
|
|
|
public void setIndex(int i) {
|
|
row = i;
|
|
}
|
|
|
|
public float getMinimumSpan(float parentSpan) {
|
|
return getPreferredSpan(parentSpan);
|
|
}
|
|
|
|
public float getPreferredSpan(float parentSpan) {
|
|
RowView rv = getRow(row);
|
|
if (rv != null) {
|
|
int adjust = (adjustments != null) ? adjustments[row] : 0;
|
|
return rv.getPreferredSpan(TableView.this.getAxis()) + adjust;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
public float getMaximumSpan(float parentSpan) {
|
|
return getPreferredSpan(parentSpan);
|
|
}
|
|
|
|
public float getBorderWidth() {
|
|
return borderWidth;
|
|
}
|
|
|
|
public float getLeadingCollapseSpan() {
|
|
return cellSpacing;
|
|
}
|
|
|
|
public float getTrailingCollapseSpan() {
|
|
return cellSpacing;
|
|
}
|
|
|
|
public int getAdjustmentWeight() {
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Current row index
|
|
*/
|
|
private int row;
|
|
|
|
/**
|
|
* Adjustments to the row requirements to handle multi-row
|
|
* table cells.
|
|
*/
|
|
private int[] adjustments;
|
|
|
|
private int[] offsets;
|
|
private int[] spans;
|
|
}
|
|
|
|
/**
|
|
* View of a row in a row-centric table.
|
|
*/
|
|
public class RowView extends BoxView {
|
|
|
|
/**
|
|
* Constructs a TableView for the given element.
|
|
*
|
|
* @param elem the element that this view is responsible for
|
|
*/
|
|
public RowView(Element elem) {
|
|
super(elem, View.X_AXIS);
|
|
fillColumns = new BitSet();
|
|
RowView.this.setPropertiesFromAttributes();
|
|
}
|
|
|
|
void clearFilledColumns() {
|
|
fillColumns.and(EMPTY);
|
|
}
|
|
|
|
void fillColumn(int col) {
|
|
fillColumns.set(col);
|
|
}
|
|
|
|
boolean isFilled(int col) {
|
|
return fillColumns.get(col);
|
|
}
|
|
|
|
/**
|
|
* The number of columns present in this row.
|
|
*/
|
|
int getColumnCount() {
|
|
int nfill = 0;
|
|
int n = fillColumns.size();
|
|
for (int i = 0; i < n; i++) {
|
|
if (fillColumns.get(i)) {
|
|
nfill ++;
|
|
}
|
|
}
|
|
return getViewCount() + nfill;
|
|
}
|
|
|
|
/**
|
|
* Fetches the attributes to use when rendering. This is
|
|
* implemented to multiplex the attributes specified in the
|
|
* model with a StyleSheet.
|
|
*/
|
|
public AttributeSet getAttributes() {
|
|
return attr;
|
|
}
|
|
|
|
View findViewAtPoint(int x, int y, Rectangle alloc) {
|
|
int n = getViewCount();
|
|
for (int i = 0; i < n; i++) {
|
|
if (getChildAllocation(i, alloc).contains(x, y)) {
|
|
childAllocation(i, alloc);
|
|
return getView(i);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
protected StyleSheet getStyleSheet() {
|
|
HTMLDocument doc = (HTMLDocument) getDocument();
|
|
return doc.getStyleSheet();
|
|
}
|
|
|
|
/**
|
|
* This is called by a child to indicate its
|
|
* preferred span has changed. This is implemented to
|
|
* execute the superclass behavior and well as try to
|
|
* determine if a row with a multi-row cell hangs across
|
|
* this row. If a multi-row cell covers this row it also
|
|
* needs to propagate a preferenceChanged so that it will
|
|
* recalculate the multi-row cell.
|
|
*
|
|
* @param child the child view
|
|
* @param width true if the width preference should change
|
|
* @param height true if the height preference should change
|
|
*/
|
|
public void preferenceChanged(View child, boolean width, boolean height) {
|
|
super.preferenceChanged(child, width, height);
|
|
if (TableView.this.multiRowCells && height) {
|
|
for (int i = rowIndex - 1; i >= 0; i--) {
|
|
RowView rv = TableView.this.getRow(i);
|
|
if (rv.multiRowCells) {
|
|
rv.preferenceChanged(null, false, true);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// The major axis requirements for a row are dictated by the column
|
|
// requirements. These methods use the value calculated by
|
|
// TableView.
|
|
protected SizeRequirements calculateMajorAxisRequirements(int axis, SizeRequirements r) {
|
|
SizeRequirements req = new SizeRequirements();
|
|
req.minimum = totalColumnRequirements.minimum;
|
|
req.maximum = totalColumnRequirements.maximum;
|
|
req.preferred = totalColumnRequirements.preferred;
|
|
req.alignment = 0f;
|
|
return req;
|
|
}
|
|
|
|
public float getMinimumSpan(int axis) {
|
|
float value;
|
|
|
|
if (axis == View.X_AXIS) {
|
|
value = totalColumnRequirements.minimum + getLeftInset() +
|
|
getRightInset();
|
|
}
|
|
else {
|
|
value = super.getMinimumSpan(axis);
|
|
}
|
|
return value;
|
|
}
|
|
|
|
public float getMaximumSpan(int axis) {
|
|
float value;
|
|
|
|
if (axis == View.X_AXIS) {
|
|
// We're flexible.
|
|
value = (float)Integer.MAX_VALUE;
|
|
}
|
|
else {
|
|
value = super.getMaximumSpan(axis);
|
|
}
|
|
return value;
|
|
}
|
|
|
|
public float getPreferredSpan(int axis) {
|
|
float value;
|
|
|
|
if (axis == View.X_AXIS) {
|
|
value = totalColumnRequirements.preferred + getLeftInset() +
|
|
getRightInset();
|
|
}
|
|
else {
|
|
value = super.getPreferredSpan(axis);
|
|
}
|
|
return value;
|
|
}
|
|
|
|
public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) {
|
|
super.changedUpdate(e, a, f);
|
|
int pos = e.getOffset();
|
|
if (pos <= getStartOffset() && (pos + e.getLength()) >=
|
|
getEndOffset()) {
|
|
RowView.this.setPropertiesFromAttributes();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Renders using the given rendering surface and area on that
|
|
* surface. This is implemented to delegate to the css box
|
|
* painter to paint the border and background prior to the
|
|
* interior.
|
|
*
|
|
* @param g the rendering surface to use
|
|
* @param allocation the allocated region to render into
|
|
* @see View#paint
|
|
*/
|
|
public void paint(Graphics g, Shape allocation) {
|
|
Rectangle a = (Rectangle) allocation;
|
|
painter.paint(g, a.x, a.y, a.width, a.height, this);
|
|
super.paint(g, a);
|
|
}
|
|
|
|
/**
|
|
* Change the child views. This is implemented to
|
|
* provide the superclass behavior and invalidate the
|
|
* grid so that rows and columns will be recalculated.
|
|
*/
|
|
public void replace(int offset, int length, View[] views) {
|
|
super.replace(offset, length, views);
|
|
invalidateGrid();
|
|
}
|
|
|
|
/**
|
|
* Calculate the height requirements of the table row. The
|
|
* requirements of multi-row cells are not considered for this
|
|
* calculation. The table itself will check and adjust the row
|
|
* requirements for all the rows that have multi-row cells spanning
|
|
* them. This method updates the multi-row flag that indicates that
|
|
* this row and rows below need additional consideration.
|
|
*/
|
|
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) {
|
|
// return super.calculateMinorAxisRequirements(axis, r);
|
|
long min = 0;
|
|
long pref = 0;
|
|
long max = 0;
|
|
multiRowCells = false;
|
|
int n = getViewCount();
|
|
for (int i = 0; i < n; i++) {
|
|
View v = getView(i);
|
|
if (getRowsOccupied(v) > 1) {
|
|
multiRowCells = true;
|
|
max = Math.max((int) v.getMaximumSpan(axis), max);
|
|
} else {
|
|
min = Math.max((int) v.getMinimumSpan(axis), min);
|
|
pref = Math.max((int) v.getPreferredSpan(axis), pref);
|
|
max = Math.max((int) v.getMaximumSpan(axis), max);
|
|
}
|
|
}
|
|
|
|
if (r == null) {
|
|
r = new SizeRequirements();
|
|
r.alignment = 0.5f;
|
|
}
|
|
r.preferred = (int) pref;
|
|
r.minimum = (int) min;
|
|
r.maximum = (int) max;
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* Perform layout for the major axis of the box (i.e. the
|
|
* axis that it represents). The results of the layout should
|
|
* be placed in the given arrays which represent the allocations
|
|
* to the children along the major axis.
|
|
* <p>
|
|
* This is re-implemented to give each child the span of the column
|
|
* width for the table, and to give cells that span multiple columns
|
|
* the multi-column span.
|
|
*
|
|
* @param targetSpan the total span given to the view, which
|
|
* would be used to layout the children
|
|
* @param axis the axis being layed out
|
|
* @param offsets the offsets from the origin of the view for
|
|
* each of the child views; this is a return value and is
|
|
* filled in by the implementation of this method
|
|
* @param spans the span of each child view; this is a return
|
|
* value and is filled in by the implementation of this method
|
|
* @return the offset and span for each child view in the
|
|
* offsets and spans parameters
|
|
*/
|
|
protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) {
|
|
int col = 0;
|
|
int ncells = getViewCount();
|
|
for (int cell = 0; cell < ncells; cell++) {
|
|
View cv = getView(cell);
|
|
if (skipComments && !(cv instanceof CellView)) {
|
|
continue;
|
|
}
|
|
for (; isFilled(col); col++); // advance to a free column
|
|
int colSpan = getColumnsOccupied(cv);
|
|
spans[cell] = columnSpans[col];
|
|
offsets[cell] = columnOffsets[col];
|
|
if (colSpan > 1) {
|
|
int n = columnSpans.length;
|
|
for (int j = 1; j < colSpan; j++) {
|
|
// Because the table may be only partially formed, some
|
|
// of the columns may not yet exist. Therefore we check
|
|
// the bounds.
|
|
if ((col+j) < n) {
|
|
spans[cell] += columnSpans[col+j];
|
|
spans[cell] += cellSpacing;
|
|
}
|
|
}
|
|
col += colSpan - 1;
|
|
}
|
|
col++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Perform layout for the minor axis of the box (i.e. the
|
|
* axis orthogonal to the axis that it represents). The results
|
|
* of the layout should be placed in the given arrays which represent
|
|
* the allocations to the children along the minor axis. This
|
|
* is called by the superclass whenever the layout needs to be
|
|
* updated along the minor axis.
|
|
* <p>
|
|
* This is implemented to delegate to the superclass, then adjust
|
|
* the span for any cell that spans multiple rows.
|
|
*
|
|
* @param targetSpan the total span given to the view, which
|
|
* would be used to layout the children
|
|
* @param axis the axis being layed out
|
|
* @param offsets the offsets from the origin of the view for
|
|
* each of the child views; this is a return value and is
|
|
* filled in by the implementation of this method
|
|
* @param spans the span of each child view; this is a return
|
|
* value and is filled in by the implementation of this method
|
|
* @return the offset and span for each child view in the
|
|
* offsets and spans parameters
|
|
*/
|
|
protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) {
|
|
super.layoutMinorAxis(targetSpan, axis, offsets, spans);
|
|
int col = 0;
|
|
int ncells = getViewCount();
|
|
for (int cell = 0; cell < ncells; cell++, col++) {
|
|
View cv = getView(cell);
|
|
for (; isFilled(col); col++); // advance to a free column
|
|
int colSpan = getColumnsOccupied(cv);
|
|
int rowSpan = getRowsOccupied(cv);
|
|
if (rowSpan > 1) {
|
|
|
|
int row0 = rowIndex;
|
|
int row1 = Math.min(rowIndex + rowSpan - 1, getRowCount()-1);
|
|
spans[cell] = getMultiRowSpan(row0, row1);
|
|
}
|
|
if (colSpan > 1) {
|
|
col += colSpan - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determines the resizability of the view along the
|
|
* given axis. A value of 0 or less is not resizable.
|
|
*
|
|
* @param axis may be either View.X_AXIS or View.Y_AXIS
|
|
* @return the resize weight
|
|
* @exception IllegalArgumentException for an invalid axis
|
|
*/
|
|
public int getResizeWeight(int axis) {
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Fetches the child view that represents the given position in
|
|
* the model. This is implemented to walk through the children
|
|
* looking for a range that contains the given position. In this
|
|
* view the children do not necessarily have a one to one mapping
|
|
* with the child elements.
|
|
*
|
|
* @param pos the search position >= 0
|
|
* @param a the allocation to the table on entry, and the
|
|
* allocation of the view containing the position on exit
|
|
* @return the view representing the given position, or
|
|
* null if there isn't one
|
|
*/
|
|
protected View getViewAtPosition(int pos, Rectangle a) {
|
|
int n = getViewCount();
|
|
for (int i = 0; i < n; i++) {
|
|
View v = getView(i);
|
|
int p0 = v.getStartOffset();
|
|
int p1 = v.getEndOffset();
|
|
if ((pos >= p0) && (pos < p1)) {
|
|
// it's in this view.
|
|
if (a != null) {
|
|
childAllocation(i, a);
|
|
}
|
|
return v;
|
|
}
|
|
}
|
|
if (pos == getEndOffset()) {
|
|
View v = getView(n - 1);
|
|
if (a != null) {
|
|
this.childAllocation(n - 1, a);
|
|
}
|
|
return v;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Update any cached values that come from attributes.
|
|
*/
|
|
void setPropertiesFromAttributes() {
|
|
StyleSheet sheet = getStyleSheet();
|
|
attr = sheet.getViewAttributes(this);
|
|
painter = sheet.getBoxPainter(attr);
|
|
}
|
|
|
|
private StyleSheet.BoxPainter painter;
|
|
private AttributeSet attr;
|
|
|
|
/** columns filled by multi-column or multi-row cells */
|
|
BitSet fillColumns;
|
|
|
|
/**
|
|
* The row index within the overall grid
|
|
*/
|
|
int rowIndex;
|
|
|
|
/**
|
|
* The view index (for row index to view index conversion).
|
|
* This is set by the updateGrid method.
|
|
*/
|
|
int viewIndex;
|
|
|
|
/**
|
|
* Does this table row have cells that span multiple rows?
|
|
*/
|
|
boolean multiRowCells;
|
|
|
|
}
|
|
|
|
/**
|
|
* Default view of an html table cell. This needs to be moved
|
|
* somewhere else.
|
|
*/
|
|
class CellView extends BlockView {
|
|
|
|
/**
|
|
* Constructs a TableCell for the given element.
|
|
*
|
|
* @param elem the element that this view is responsible for
|
|
*/
|
|
public CellView(Element elem) {
|
|
super(elem, Y_AXIS);
|
|
}
|
|
|
|
/**
|
|
* Perform layout for the major axis of the box (i.e. the
|
|
* axis that it represents). The results of the layout should
|
|
* be placed in the given arrays which represent the allocations
|
|
* to the children along the major axis. This is called by the
|
|
* superclass to recalculate the positions of the child views
|
|
* when the layout might have changed.
|
|
* <p>
|
|
* This is implemented to delegate to the superclass to
|
|
* tile the children. If the target span is greater than
|
|
* was needed, the offsets are adjusted to align the children
|
|
* (i.e. position according to the html valign attribute).
|
|
*
|
|
* @param targetSpan the total span given to the view, which
|
|
* would be used to layout the children
|
|
* @param axis the axis being layed out
|
|
* @param offsets the offsets from the origin of the view for
|
|
* each of the child views; this is a return value and is
|
|
* filled in by the implementation of this method
|
|
* @param spans the span of each child view; this is a return
|
|
* value and is filled in by the implementation of this method
|
|
* @return the offset and span for each child view in the
|
|
* offsets and spans parameters
|
|
*/
|
|
protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) {
|
|
super.layoutMajorAxis(targetSpan, axis, offsets, spans);
|
|
// calculate usage
|
|
int used = 0;
|
|
int n = spans.length;
|
|
for (int i = 0; i < n; i++) {
|
|
used += spans[i];
|
|
}
|
|
|
|
// calculate adjustments
|
|
int adjust = 0;
|
|
if (used < targetSpan) {
|
|
// PENDING(prinz) change to use the css alignment.
|
|
String valign = (String) getElement().getAttributes().getAttribute(
|
|
HTML.Attribute.VALIGN);
|
|
if (valign == null) {
|
|
AttributeSet rowAttr = getElement().getParentElement().getAttributes();
|
|
valign = (String) rowAttr.getAttribute(HTML.Attribute.VALIGN);
|
|
}
|
|
if ((valign == null) || valign.equals("middle")) {
|
|
adjust = (targetSpan - used) / 2;
|
|
} else if (valign.equals("bottom")) {
|
|
adjust = targetSpan - used;
|
|
}
|
|
}
|
|
|
|
// make adjustments.
|
|
if (adjust != 0) {
|
|
for (int i = 0; i < n; i++) {
|
|
offsets[i] += adjust;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Calculate the requirements needed along the major axis.
|
|
* This is called by the superclass whenever the requirements
|
|
* need to be updated (i.e. a preferenceChanged was messaged
|
|
* through this view).
|
|
* <p>
|
|
* This is implemented to delegate to the superclass, but
|
|
* indicate the maximum size is very large (i.e. the cell
|
|
* is willing to expend to occupy the full height of the row).
|
|
*
|
|
* @param axis the axis being layed out.
|
|
* @param r the requirements to fill in. If null, a new one
|
|
* should be allocated.
|
|
*/
|
|
protected SizeRequirements calculateMajorAxisRequirements(int axis,
|
|
SizeRequirements r) {
|
|
SizeRequirements req = super.calculateMajorAxisRequirements(axis, r);
|
|
req.maximum = Integer.MAX_VALUE;
|
|
return req;
|
|
}
|
|
|
|
@Override
|
|
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) {
|
|
SizeRequirements rv = super.calculateMinorAxisRequirements(axis, r);
|
|
//for the cell the minimum should be derived from the child views
|
|
//the parent behaviour is to use CSS for that
|
|
int n = getViewCount();
|
|
int min = 0;
|
|
for (int i = 0; i < n; i++) {
|
|
View v = getView(i);
|
|
min = Math.max((int) v.getMinimumSpan(axis), min);
|
|
}
|
|
rv.minimum = Math.min(rv.minimum, min);
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
|
|
}
|