Hierarchy
This is the layout style of choice for creating structural layouts in a multi-column format where the width of +each column can be specified as a percentage or fixed width, but the height is allowed to vary based on the content. +This class is intended to be extended or created via the layout:'column' Ext.container.Container.layout config, +and should generally not need to be created directly via the new keyword.
+ + +ColumnLayout does not have any direct config options (other than inherited ones), but it does support a +specific config property of columnWidth that can be included in the config of any panel added to it. The +layout will use the columnWidth (if present) or width of each panel during layout to determine how to size each panel. +If width or columnWidth is not specified for a given panel, its width will default to the panel's width (or auto).
+ + +The width property is always evaluated as pixels, and must be a number greater than or equal to 1. +The columnWidth property is always evaluated as a percentage, and must be a decimal value greater than 0 and +less than 1 (e.g., .25).
+ + +The basic rules for specifying column widths are pretty simple. The logic makes two passes through the
+set of contained panels. During the first layout pass, all panels that either have a fixed width or none
+specified (auto) are skipped, but their widths are subtracted from the overall container width. During the second
+pass, all panels with columnWidths are assigned pixel widths in proportion to their percentages based on
+the total remaining container width. In other words, percentage width panels are designed to fill the space
+left over by all the fixed-width and/or auto-width panels. Because of this, while you can specify any number of columns
+with different percentages, the columnWidths must always add up to 1 (or 100%) when added together, otherwise your
+layout may not render as expected.
+
+Example usage:
// All columns are percentages -- they must add up to 1
+ Ext.create('Ext.panel.Panel', {
+ title: 'Column Layout - Percentage Only',
+ width: 350,
+ height: 250,
+ layout:'column',
+ items: [{
+ title: 'Column 1',
+ columnWidth: .25
+ },{
+ title: 'Column 2',
+ columnWidth: .55
+ },{
+ title: 'Column 3',
+ columnWidth: .20
+ }],
+ renderTo: Ext.getBody()
+ });
+
+// 
+// Mix of width and columnWidth -- all columnWidth values must add up
+// to 1. The first column will take up exactly 120px, and the last two
+// columns will fill the remaining container width.
+
+ Ext.create('Ext.Panel', {
+ title: 'Column Layout - Mixed',
+ width: 350,
+ height: 250,
+ layout:'column',
+ items: [{
+ title: 'Column 1',
+ width: 120
+ },{
+ title: 'Column 2',
+ columnWidth: .7
+ },{
+ title: 'Column 3',
+ columnWidth: .3
+ }],
+ renderTo: Ext.getBody()
+ });
+Config Options
CSS Class configs
An optional extra CSS class that will be added to the container. This can be useful for adding +customized styles to the container or any of its children using standard CSS rules. See +Ext.Component.ctCls also.
+ + + +Other Configs
Flag to notify the ownerCt Component on afterLayout of a change
+Flag to notify the ownerCt Component on afterLayout of a change
+Flag to notify the ownerCt Container on afterLayout of a change
+Flag to notify the ownerCt Container on afterLayout of a change
+An optional extra CSS class that will be added to the container. This can be useful for adding +customized styles to the container or any of its children using standard CSS rules. See +Ext.Component.ctCls also.
+ + + +Methods
Returns an array of child components either for a render phase (Performed in the beforeLayout method of the layout's +base class), or the layout phase (onLayout).
+ +Returns
- Array
of child components
+
Returns the element into which rendering must take place. Defaults to the owner Container's Ext.AbstractComponent.targetEl.
+ + +May be overridden in layout managers which implement an inner element.
+Returns
- Ext.core.Element +