/*!
 * Ext JS Library 3.2.0
 * Copyright(c) 2006-2010 Ext JS, Inc.
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
/** * @class Ext.layout.ColumnLayout * @extends Ext.layout.ContainerLayout *

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' {@link Ext.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
var p = new Ext.Panel({
    title: 'Column Layout - Percentage Only',
    layout:'column',
    items: [{
        title: 'Column 1',
        columnWidth: .25
    },{
        title: 'Column 2',
        columnWidth: .6
    },{
        title: 'Column 3',
        columnWidth: .15
    }]
});

// 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.
var p = new Ext.Panel({
    title: 'Column Layout - Mixed',
    layout:'column',
    items: [{
        title: 'Column 1',
        width: 120
    },{
        title: 'Column 2',
        columnWidth: .8
    },{
        title: 'Column 3',
        columnWidth: .2
    }]
});
*/ Ext.layout.ColumnLayout = Ext.extend(Ext.layout.ContainerLayout, { // private monitorResize:true, type: 'column', extraCls: 'x-column', scrollOffset : 0, // private targetCls: 'x-column-layout-ct', isValidParent : function(c, target){ return this.innerCt && c.getPositionEl().dom.parentNode == this.innerCt.dom; }, getLayoutTargetSize : function() { var target = this.container.getLayoutTarget(), ret; if (target) { ret = target.getViewSize(); // IE in strict mode will return a width of 0 on the 1st pass of getViewSize. // Use getStyleSize to verify the 0 width, the adjustment pass will then work properly // with getViewSize if (Ext.isIE && Ext.isStrict && ret.width == 0){ ret = target.getStyleSize(); } ret.width -= target.getPadding('lr'); ret.height -= target.getPadding('tb'); } return ret; }, renderAll : function(ct, target) { if(!this.innerCt){ // the innerCt prevents wrapping and shuffling while // the container is resizing this.innerCt = target.createChild({cls:'x-column-inner'}); this.innerCt.createChild({cls:'x-clear'}); } Ext.layout.ColumnLayout.superclass.renderAll.call(this, ct, this.innerCt); }, // private onLayout : function(ct, target){ var cs = ct.items.items, len = cs.length, c, i, m, margins = []; this.renderAll(ct, target); var size = this.getLayoutTargetSize(); if(size.width < 1 && size.height < 1){ // display none? return; } var w = size.width - this.scrollOffset, h = size.height, pw = w; this.innerCt.setWidth(w); // some columns can be percentages while others are fixed // so we need to make 2 passes for(i = 0; i < len; i++){ c = cs[i]; m = c.getPositionEl().getMargins('lr'); margins[i] = m; if(!c.columnWidth){ pw -= (c.getWidth() + m); } } pw = pw < 0 ? 0 : pw; for(i = 0; i < len; i++){ c = cs[i]; m = margins[i]; if(c.columnWidth){ c.setSize(Math.floor(c.columnWidth * pw) - m); } } // Browsers differ as to when they account for scrollbars. We need to re-measure to see if the scrollbar // spaces were accounted for properly. If not, re-layout. if (Ext.isIE) { if (i = target.getStyle('overflow') && i != 'hidden' && !this.adjustmentPass) { var ts = this.getLayoutTargetSize(); if (ts.width != size.width){ this.adjustmentPass = true; this.onLayout(ct, target); } } } delete this.adjustmentPass; }
/** * @property activeItem * @hide */ }); Ext.Container.LAYOUTS['column'] = Ext.layout.ColumnLayout;