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<pre class="prettyprint lang-js"><div id="cls-Ext.layout.ColumnLayout"></div>/**
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* @class Ext.layout.ColumnLayout
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* @extends Ext.layout.ContainerLayout
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* <p>This is the layout style of choice for creating structural layouts in a multi-column format where the width of
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* each column can be specified as a percentage or fixed width, but the height is allowed to vary based on the content.
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* This class is intended to be extended or created via the layout:'column' {@link Ext.Container#layout} config,
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* and should generally not need to be created directly via the new keyword.</p>
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* <p>ColumnLayout does not have any direct config options (other than inherited ones), but it does support a
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* specific config property of <b><tt>columnWidth</tt></b> that can be included in the config of any panel added to it. The
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* layout will use the columnWidth (if present) or width of each panel during layout to determine how to size each panel.
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* If width or columnWidth is not specified for a given panel, its width will default to the panel's width (or auto).</p>
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* <p>The width property is always evaluated as pixels, and must be a number greater than or equal to 1.
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* The columnWidth property is always evaluated as a percentage, and must be a decimal value greater than 0 and
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* less than 1 (e.g., .25).</p>
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* <p>The basic rules for specifying column widths are pretty simple. The logic makes two passes through the
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* set of contained panels. During the first layout pass, all panels that either have a fixed width or none
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* specified (auto) are skipped, but their widths are subtracted from the overall container width. During the second
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* pass, all panels with columnWidths are assigned pixel widths in proportion to their percentages based on
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* the total <b>remaining</b> container width. In other words, percentage width panels are designed to fill the space
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* left over by all the fixed-width and/or auto-width panels. Because of this, while you can specify any number of columns
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* with different percentages, the columnWidths must always add up to 1 (or 100%) when added together, otherwise your
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* layout may not render as expected. Example usage:</p>
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* <pre><code>
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// All columns are percentages -- they must add up to 1
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var p = new Ext.Panel({
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title: 'Column Layout - Percentage Only',
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layout:'column',
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items: [{
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title: 'Column 1',
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columnWidth: .25
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},{
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title: 'Column 2',
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columnWidth: .6
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},{
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title: 'Column 3',
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columnWidth: .15
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}]
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});
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// Mix of width and columnWidth -- all columnWidth values must add up
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// to 1. The first column will take up exactly 120px, and the last two
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// columns will fill the remaining container width.
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var p = new Ext.Panel({
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title: 'Column Layout - Mixed',
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layout:'column',
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items: [{
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title: 'Column 1',
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width: 120
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},{
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title: 'Column 2',
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columnWidth: .8
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},{
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title: 'Column 3',
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columnWidth: .2
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}]
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});
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</code></pre>
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*/
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Ext.layout.ColumnLayout = Ext.extend(Ext.layout.ContainerLayout, {
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// private
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monitorResize:true,
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extraCls: 'x-column',
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scrollOffset : 0,
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// private
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targetCls: 'x-column-layout-ct',
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isValidParent : function(c, target){
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return c.getPositionEl().dom.parentNode == this.innerCt.dom;
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},
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// private
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onLayout : function(ct, target){
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var cs = ct.items.items, len = cs.length, c, i;
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if(!this.innerCt){
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// the innerCt prevents wrapping and shuffling while
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// the container is resizing
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this.innerCt = target.createChild({cls:'x-column-inner'});
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this.innerCt.createChild({cls:'x-clear'});
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}
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this.renderAll(ct, this.innerCt);
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var size = target.getViewSize(true);
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if(size.width < 1 && size.height < 1){ // display none?
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return;
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}
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var w = size.width - this.scrollOffset,
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h = size.height,
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pw = w;
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this.innerCt.setWidth(w);
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// some columns can be percentages while others are fixed
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// so we need to make 2 passes
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for(i = 0; i < len; i++){
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c = cs[i];
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if(!c.columnWidth){
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pw -= (c.getSize().width + c.getPositionEl().getMargins('lr'));
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}
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}
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pw = pw < 0 ? 0 : pw;
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for(i = 0; i < len; i++){
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c = cs[i];
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if(c.columnWidth){
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c.setSize(Math.floor(c.columnWidth * pw) - c.getPositionEl().getMargins('lr'));
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}
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}
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}
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<div id="prop-Ext.layout.ColumnLayout-activeItem"></div>/**
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* @property activeItem
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* @hide
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*/
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});
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Ext.Container.LAYOUTS['column'] = Ext.layout.ColumnLayout;</pre>
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