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monkeyking/examples/Interactive Widgets/Widget Styling.ipynb

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{
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"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"[Index](Index.ipynb) - [Back](Widget Events.ipynb) - [Next](Custom Widget - Hello World.ipynb)"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"%%html\n",
"<style>\n",
".example-container { background: #999999; padding: 2px; min-height: 100px; }\n",
".example-container.sm { min-height: 50px; }\n",
".example-box { background: #9999FF; width: 50px; height: 50px; text-align: center; vertical-align: middle; color: white; font-weight: bold; margin: 2px;}\n",
".example-box.med { width: 65px; height: 65px; } \n",
".example-box.lrg { width: 80px; height: 80px; } \n",
"</style>"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 1,
"metadata": {
"slideshow": {
"slide_type": "slide"
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},
"source": [
"Widget Styling"
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},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"CSS"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Since the representation of the widget you see is a **browser element**, **Cascading Style Sheets (CSS)** are used for styling. Widgets have a **`set_css` method** that allows you to **add and remove CSS properties** from your elements. The following example shows had `set_css` **can be used to set the background color** of a `TextWidget`."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from IPython.html import widgets\n",
"text = widgets.TextWidget(value=\"Hello World!\")\n",
"text.set_css('background', 'lime')\n",
"text "
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
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},
"source": [
"Color codes"
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},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"In the example above, **the color `lime` is specified by name**. CSS also supports specifying colors by a **3 byte hexadecimal string**. The first byte is red, second green, and third blue (**RGB**). The following example sets the `TextWidget`'s background to blue."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"text.set_css('background', '#0000FF')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Forecolor"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"In CSS the **font color is `color`.**"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"text.set_css('color', '#FFFFFF')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
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},
"source": [
"Size"
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},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"CSS is also used to set the **height and width** of controls. The `set_css` method also **can accept a single dictionary with multiple CSS properties** (as seen below)."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"btn = widgets.ButtonWidget()\n",
"btn.set_css({\n",
" 'width': '100px',\n",
" 'height': '100px',\n",
" 'background': 'red',\n",
"})\n",
"btn"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Removing"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"To remove the styling, you can call `set_css` again, but use an empty string instead of a color value."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"btn.set_css('background', '')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"For more information about what can be done with CSS, please refer to the [Mozilla Developer Network's series on it](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_started).\n"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {
"slideshow": {
"slide_type": "slide"
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},
"source": [
"Parent/child relationships"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"To display widget A inside widget B, widget A must be a child of widget B. **Only one instance of any particular widget can be child of another (this limitation will be removed in IPython 3.0).** In other words, *widget A* cannot have *widget B* listed twice in it's list of children.\n",
"\n",
"Widgets that can contain other widgets have a **`children` attribute**. This attribute can be **set via a keyword argument** in the widget's constructor **or after construction**. Calling display on an **object with children automatically displays those children**, too."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from IPython.display import display\n",
"\n",
"float_range = widgets.FloatSliderWidget()\n",
"string = widgets.TextWidget(value='hi')\n",
"container = widgets.ContainerWidget(children=[float_range, string])\n",
"\n",
"container.set_css('border', '3px dotted red')\n",
"display(container) # Displays the `container` and all of it's children."
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"After the parent is displayed"
]
},
{
"cell_type": "markdown",
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Children **can be added to parents** after the parent has been displayed. The **parent is responsible for rendering its children**."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"container = widgets.ContainerWidget()\n",
"container.set_css('border', '3px dotted red')\n",
"display(container)\n",
"\n",
"int_range = widgets.IntSliderWidget()\n",
"container.children=[int_range]"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 2,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Fancy containers"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"If you need to display a more complicated set of widgets, there are **specialized containers** that you can use. To display **multiple sets of widgets**, you can use an **`AccordionWidget` or a `TabWidget` in combination with one `ContainerWidget` per set of widgets** (as seen below). The \"pages\" of these widgets are their children. To set the titles of the pages, one must **call `set_title` after the widget has been displayed**."
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"AccordionWidget"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"name1 = widgets.TextWidget(description='Location:')\n",
"zip1 = widgets.BoundedIntTextWidget(description='Zip:', min=0, max=99999)\n",
"page1 = widgets.ContainerWidget(children=[name1, zip1])\n",
"\n",
"name2 = widgets.TextWidget(description='Location:')\n",
"zip2 = widgets.BoundedIntTextWidget(description='Zip:', min=0, max=99999)\n",
"page2 = widgets.ContainerWidget(children=[name2, zip2])\n",
"\n",
"accord = widgets.AccordionWidget(children=[page1, page2])\n",
"display(accord)\n",
"\n",
"accord.set_title(0, 'From')\n",
"accord.set_title(1, 'To')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"TabWidget"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"name = widgets.TextWidget(description='Name:')\n",
"color = widgets.DropdownWidget(description='Color:', values=['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet'])\n",
"page1 = widgets.ContainerWidget(children=[name, color])\n",
"\n",
"age = widgets.IntSliderWidget(description='Age:', min=0, max=120, value=50)\n",
"gender = widgets.RadioButtonsWidget(description='Gender:', values=['male', 'female'])\n",
"page2 = widgets.ContainerWidget(children=[age, gender])\n",
"\n",
"tabs = widgets.TabWidget(children=[page1, page2])\n",
"display(tabs)\n",
"\n",
"tabs.set_title(0, 'Name')\n",
"tabs.set_title(1, 'Details')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"PopupWidget"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Unlike the other two special containers, the `PopupWidget` is only **designed to display one set of widgets**. The `PopupWidget` can be used to **display widgets outside of the widget area**. "
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"counter = widgets.IntTextWidget(description='Counter:')\n",
"popup = widgets.PopupWidget(children=[counter], description='Popup Demo', button_text='Popup Button')\n",
"display(popup)"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"counter.value += 1"
],
"language": "python",
"metadata": {},
"outputs": []
},
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"language": "python",
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"language": "python",
"metadata": {},
"outputs": []
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"cell_type": "code",
"collapsed": false,
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"language": "python",
"metadata": {},
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"cell_type": "code",
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"outputs": []
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"input": [],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"counter.value += 1"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"popup.close()"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 1,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Alignment"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Most widgets have a **`description` attribute**, which allows a label for the widget to be defined.\n",
"The label of the widget **has a fixed minimum width**.\n",
"The text of the label is **always right aligned and the widget is left aligned**:"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"display(widgets.TextWidget(description=\"a:\"))\n",
"display(widgets.TextWidget(description=\"aa:\"))\n",
"display(widgets.TextWidget(description=\"aaa:\"))"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "markdown",
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"If a **label is longer** than the minimum width, the **widget is shifted to the right**:"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"display(widgets.TextWidget(description=\"a:\"))\n",
"display(widgets.TextWidget(description=\"aa:\"))\n",
"display(widgets.TextWidget(description=\"aaa:\"))\n",
"display(widgets.TextWidget(description=\"aaaaaaaaaaaaaaaaaa:\"))"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "markdown",
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"If a `description` is **not set** for the widget, the **label is not displayed**:"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"display(widgets.TextWidget(description=\"a:\"))\n",
"display(widgets.TextWidget(description=\"aa:\"))\n",
"display(widgets.TextWidget(description=\"aaa:\"))\n",
"display(widgets.TextWidget())"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 1,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"DOM Classes"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"IPython defines a large number of **DOM (document object model) classes** that you can apply to your widgets. Applying a DOM class causes all of the **CSS associated with that class** to be applied to the element. Classes can be applied and removed using the **`add_class` and `remove_class`** methods **after a widget has been displayed**. The majority of DOM classes defined by IPython are actually **Bootstrap classes**. For more information on Bootstrap classes and CSS, please refer to [Bootstrap's website](http://getbootstrap.com/2.3.2/)."
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Path dependent"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Both `add_class` and `remove_class` allow you to use **CSS selectors** to pick which sub elements of your widget get styled. Because of this, the `add_class` and `remove_class` methods are **path dependent (order specific)**. The following example shows the **same three calls** made in three **different orders** and the resulting output. **All three differ.**"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"%%html\n",
"<style>\n",
" div.cube { display: inline; padding: 5px; }\n",
" div.red { background: red; }\n",
" div.blue { background: blue; }\n",
"</style>"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from IPython.html import widgets\n",
"from IPython.display import display\n",
"html = '<br />'.join([''.join(['<div class=\"cube\">x</div>' for i in range(8)]) for j in range(8)])\n",
"widget = [widgets.HTMLWidget(value=html) for i in range(3)]\n",
"\n",
"display(widget[0])\n",
"widget[0].add_class('red', 'div.cube:nth-child(even)')\n",
"widget[0].remove_class('red', 'div.red:nth-child(7n+1)')\n",
"widget[0].add_class('blue', 'div.red:nth-child(3n+1)')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"display(widget[1])\n",
"widget[1].remove_class('red', 'div.red:nth-child(7n+1)')\n",
"widget[1].add_class('blue', 'div.red:nth-child(3n+1)')\n",
"widget[1].add_class('red', 'div.cube:nth-child(even)')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"display(widget[2])\n",
"widget[2].add_class('red', 'div.cube:nth-child(even)')\n",
"widget[2].add_class('blue', 'div.red:nth-child(3n+1)')\n",
"widget[2].remove_class('red', 'div.red:nth-child(7n+1)')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 2,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Alignment classes"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Widgets can be aligned using IPython **alignment classes**. These classes should work with most widgets, but were **designed to be applied to `ContainerWidget`s**. Examples of these classes follow:"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Orientation classes"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"vbox\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Widget containers default to this orientation.\n",
"<div class=\"example-container vbox\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"hbox\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container hbox\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Packing classes"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"These examples use the **hbox layout** to show packing. Packing is the alignment of the widgets along the the **axis that they are displayed on**."
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"start\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container hbox start\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"center\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container hbox center\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"end\""
]
},
{
"cell_type": "markdown",
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"<div class=\"example-container hbox end\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Aligning classes"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"These examples use the **hbox layout** to show alignment. Packing is the alignment of the widgets along the the **axis perpendicular to the one that they are displayed on**."
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"align-start\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container hbox align-start\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"align-center\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container hbox align-center\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"\"align-end\""
]
},
{
"cell_type": "markdown",
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"<div class=\"example-container hbox align-end\">\n",
"<div class=\"example-box\">A</div>\n",
"<div class=\"example-box med\">B</div>\n",
"<div class=\"example-box lrg\">C</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"Flex classes"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"To specify **how \"greedy\" a container is** when filling in the remaining space of its parent, the **`box-flexN`** classes are used (where N is 0, 1, or 2). The **higher the value of N, the more greedy** the child is. **`box-flex0` is the default behavior**, which is to not fill the parent."
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"Example 1"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container sm hbox center\">\n",
"<div class=\"example-box box-flex0\">box-flex0</div>\n",
"<div class=\"example-box box-flex0\">box-flex0</div>\n",
"<div class=\"example-box box-flex0\">box-flex0</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"Example 2"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container sm hbox center\">\n",
"<div class=\"example-box box-flex0\">box-flex0</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"<div class=\"example-box box-flex0\">box-flex0</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"Example 3"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container sm hbox center\">\n",
"<div class=\"example-box box-flex0\">box-flex0</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"Example 4"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container sm hbox center\">\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"Example 5"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<div class=\"example-container sm hbox center\">\n",
"<div class=\"example-box box-flex2\">box-flex2</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 4,
"metadata": {},
"source": [
"Example 6"
]
},
{
"cell_type": "markdown",
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"<div class=\"example-container sm hbox center\">\n",
"<div class=\"example-box box-flex0\">box-flex0</div>\n",
"<div class=\"example-box box-flex1\">box-flex1</div>\n",
"<div class=\"example-box box-flex2\">box-flex2</div>\n",
"</div>"
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Application to widgets"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Widget containers **default to vbox** alignment."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"buttons = [widgets.ButtonWidget(description=str(i)) for i in range(3)]\n",
"\n",
"container = widgets.ContainerWidget(children=buttons)\n",
"display(container)"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Using hbox"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"To make a widget container display its widgets horizontally, you need to **remove the `vbox` class** from the container and **add the `hbox` class** in its place."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"container = widgets.ContainerWidget(children=buttons)\n",
"display(container)\n",
"container.remove_class('vbox')\n",
"container.add_class('hbox')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"By setting the width of the container to 100% and adding the `center` class to it, you can center the buttons."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"container.set_css('width', '100%')\n",
"container.add_class('center')"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 2,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Style classes"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"In addition to alignment classes, the classes defined by Bootstrap can also be used. This tutorial will only cover a few of the most common classes. For a full list of Bootstrap classes, please refer to [Bootstrap's website](http://getbootstrap.com/2.3.2/)."
]
},
{
"cell_type": "heading",
"level": 3,
"metadata": {},
"source": [
"ButtonWidgets"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# List of the bootstrap button styles\n",
"classes = [\n",
" 'btn', \n",
" 'btn-primary', \n",
" 'btn-info', \n",
" 'btn-success', \n",
" 'btn-warning', \n",
" 'btn-danger', \n",
" 'btn-inverse', \n",
" 'btn-link'\n",
"]\n",
"\n",
"# Display the buttons in a hbox\n",
"container = widgets.ContainerWidget(children=[widgets.ButtonWidget(description=c) for c in classes])\n",
"display(container)\n",
"\n",
"# Apply classes after display\n",
"container.remove_class('vbox')\n",
"container.add_class('hbox')\n",
"ret = [container.children[i].add_class(c) for i, c in enumerate(classes)]"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"ContainerWidgets"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"def create_label(cls):\n",
" class_name = widgets.HTMLWidget(value=cls)\n",
" container = widgets.ContainerWidget(children=[class_name])\n",
" display(container)\n",
" container.add_class(cls)\n",
"\n",
"ret = [create_label(c) for c in [\n",
" 'alert', \n",
" 'alert alert-error', \n",
" 'alert alert-success', \n",
" 'alert alert-info'\n",
"]]"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"ProgressWidgets"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"classes = [\n",
" 'progress-info', \n",
" 'progress-success', \n",
" 'progress-warning', \n",
" 'progress-danger',\n",
" 'progress-info progress-striped', \n",
" 'progress-success progress-striped', \n",
" 'progress-warning progress-striped', \n",
" 'progress-danger progress-striped',\n",
" 'active progress-info progress-striped', \n",
" 'active progress-success progress-striped', \n",
" 'active progress-warning progress-striped', \n",
" 'active progress-danger progress-striped',\n",
"]\n",
"ws = [widgets.IntProgressWidget(value=50, description=c) for c in classes]\n",
"ret = [display(w) for w in ws]\n",
"ret = [ws[i].add_class(c) for i, cs in enumerate(classes) for c in cs.split(' ')]"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 2,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Visibility"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Sometimes it is necessary to **hide or show widgets** in place, **without having to re-display** the widget.\n",
"The `visibility` property of widgets can be used to hide or show **widgets that have already been displayed** (as seen below)."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"string = widgets.LatexWidget(value=\"Hello World!\")\n",
"display(string) "
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"string.visible=False"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"string.visible=True"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "heading",
"level": 3,
"metadata": {
"slideshow": {
"slide_type": "slide"
}
},
"source": [
"Another example"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"In the example below, a form is rendered, which conditionally displays widgets depending on the state of other widgets. Try toggling the student checkbox."
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"form = widgets.ContainerWidget()\n",
"first = widgets.TextWidget(description=\"First Name:\")\n",
"last = widgets.TextWidget(description=\"Last Name:\")\n",
"\n",
"student = widgets.CheckboxWidget(description=\"Student:\", value=False)\n",
"school_info = widgets.ContainerWidget(visible=False, children=[\n",
" widgets.TextWidget(description=\"School:\"),\n",
" widgets.IntTextWidget(description=\"Grade:\", min=0, max=12)\n",
" ])\n",
"\n",
"pet = widgets.TextWidget(description=\"Pet's Name:\")\n",
"form.children = [first, last, student, school_info, pet]\n",
"display(form)\n",
"\n",
"def on_student_toggle(name, value):\n",
" if value:\n",
" school_info.visible = True\n",
" else:\n",
" school_info.visible = False\n",
"student.on_trait_change(on_student_toggle, 'value')\n"
],
"language": "python",
"metadata": {},
"outputs": []
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"[Index](Index.ipynb) - [Back](Widget Events.ipynb) - [Next](Custom Widget - Hello World.ipynb)"
]
}
],
"metadata": {}
}
]
}
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