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/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
// We are adding these custom layouts to a namespace that does not
// exist by default in Ext, so we have to add the namespace first:
Ext.ns('Ext.ux.layout');
/**
* @class Ext.ux.layout.RowLayout
* @extends Ext.layout.ContainerLayout
* <p>This is the layout style of choice for creating structural layouts in a multi-row format where the height of
* each row can be specified as a percentage or fixed height. Row widths can also be fixed, percentage or auto.
* This class is intended to be extended or created via the layout:'ux.row' {@link Ext.Container#layout} config,
* and should generally not need to be created directly via the new keyword.</p>
* <p>RowLayout does not have any direct config options (other than inherited ones), but it does support a
* specific config property of <b><tt>rowHeight</tt></b> that can be included in the config of any panel added to it. The
* layout will use the rowHeight (if present) or height of each panel during layout to determine how to size each panel.
* If height or rowHeight is not specified for a given panel, its height will default to the panel's height (or auto).</p>
* <p>The height property is always evaluated as pixels, and must be a number greater than or equal to 1.
* The rowHeight property is always evaluated as a percentage, and must be a decimal value greater than 0 and
* less than 1 (e.g., .25).</p>
* <p>The basic rules for specifying row heights 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 height or none
* specified (auto) are skipped, but their heights are subtracted from the overall container height. During the second
* pass, all panels with rowHeights are assigned pixel heights in proportion to their percentages based on
* the total <b>remaining</b> container height. In other words, percentage height panels are designed to fill the space
* left over by all the fixed-height and/or auto-height panels. Because of this, while you can specify any number of rows
* with different percentages, the rowHeights must always add up to 1 (or 100%) when added together, otherwise your
* layout may not render as expected. Example usage:</p>
* <pre><code>
// All rows are percentages -- they must add up to 1
var p = new Ext.Panel({
title: 'Row Layout - Percentage Only',
layout:'ux.row',
items: [{
title: 'Row 1',
rowHeight: .25
},{
title: 'Row 2',
rowHeight: .6
},{
title: 'Row 3',
rowHeight: .15
}]
});
// Mix of height and rowHeight -- all rowHeight values must add
// up to 1. The first row will take up exactly 120px, and the last two
// rows will fill the remaining container height.
var p = new Ext.Panel({
title: 'Row Layout - Mixed',
layout:'ux.row',
items: [{
title: 'Row 1',
height: 120,
// standard panel widths are still supported too:
width: '50%' // or 200
},{
title: 'Row 2',
rowHeight: .8,
width: 300
},{
title: 'Row 3',
rowHeight: .2
}]
});
</code></pre>
*/
Ext.ux.layout.RowLayout = Ext.extend(Ext.layout.ContainerLayout, {
// private
monitorResize:true,
type: 'row',
// private
allowContainerRemove: false,
// private
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 height of 0 on the 1st pass of getViewSize.
// Use getStyleSize to verify the 0 height, the adjustment pass will then work properly
// with getViewSize
if (Ext.isIE && Ext.isStrict && ret.height == 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 rs = ct.items.items,
len = rs.length,
r,
m,
i,
margins = [];
this.renderAll(ct, target);
var size = this.getLayoutTargetSize();
if(size.width < 1 && size.height < 1){ // display none?
return;
}
var h = size.height,
ph = h;
this.innerCt.setSize({height:h});
// some rows can be percentages while others are fixed
// so we need to make 2 passes
for(i = 0; i < len; i++){
r = rs[i];
m = r.getPositionEl().getMargins('tb');
margins[i] = m;
if(!r.rowHeight){
ph -= (r.getHeight() + m);
}
}
ph = ph < 0 ? 0 : ph;
for(i = 0; i < len; i++){
r = rs[i];
m = margins[i];
if(r.rowHeight){
r.setSize({height: Math.floor(r.rowHeight*ph) - 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['ux.row'] = Ext.ux.layout.RowLayout;
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