192 lines
6.8 KiB
JavaScript
192 lines
6.8 KiB
JavaScript
/*
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This file is part of Ext JS 3.4
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Copyright (c) 2011-2013 Sencha Inc
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Contact: http://www.sencha.com/contact
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GNU General Public License Usage
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This file may be used under the terms of the GNU General Public License version 3.0 as
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published by the Free Software Foundation and appearing in the file LICENSE included in the
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packaging of this file.
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Please review the following information to ensure the GNU General Public License version 3.0
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requirements will be met: http://www.gnu.org/copyleft/gpl.html.
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If you are unsure which license is appropriate for your use, please contact the sales department
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at http://www.sencha.com/contact.
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Build date: 2013-04-03 15:07:25
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*/
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// We are adding these custom layouts to a namespace that does not
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// exist by default in Ext, so we have to add the namespace first:
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Ext.ns('Ext.ux.layout');
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/**
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* @class Ext.ux.layout.RowLayout
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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-row format where the height of
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* each row can be specified as a percentage or fixed height. Row widths can also be fixed, percentage or auto.
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* This class is intended to be extended or created via the layout:'ux.row' {@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>RowLayout 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>rowHeight</tt></b> that can be included in the config of any panel added to it. The
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* layout will use the rowHeight (if present) or height of each panel during layout to determine how to size each panel.
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* If height or rowHeight is not specified for a given panel, its height will default to the panel's height (or auto).</p>
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* <p>The height property is always evaluated as pixels, and must be a number greater than or equal to 1.
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* The rowHeight 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 row heights 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 height or none
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* specified (auto) are skipped, but their heights are subtracted from the overall container height. During the second
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* pass, all panels with rowHeights are assigned pixel heights in proportion to their percentages based on
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* the total <b>remaining</b> container height. In other words, percentage height panels are designed to fill the space
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* left over by all the fixed-height and/or auto-height panels. Because of this, while you can specify any number of rows
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* with different percentages, the rowHeights 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 rows are percentages -- they must add up to 1
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var p = new Ext.Panel({
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title: 'Row Layout - Percentage Only',
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layout:'ux.row',
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items: [{
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title: 'Row 1',
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rowHeight: .25
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},{
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title: 'Row 2',
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rowHeight: .6
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},{
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title: 'Row 3',
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rowHeight: .15
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}]
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});
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// Mix of height and rowHeight -- all rowHeight values must add
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// up to 1. The first row will take up exactly 120px, and the last two
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// rows will fill the remaining container height.
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var p = new Ext.Panel({
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title: 'Row Layout - Mixed',
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layout:'ux.row',
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items: [{
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title: 'Row 1',
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height: 120,
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// standard panel widths are still supported too:
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width: '50%' // or 200
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},{
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title: 'Row 2',
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rowHeight: .8,
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width: 300
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},{
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title: 'Row 3',
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rowHeight: .2
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}]
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});
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</code></pre>
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*/
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Ext.ux.layout.RowLayout = Ext.extend(Ext.layout.ContainerLayout, {
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// private
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monitorResize:true,
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type: 'row',
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// private
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allowContainerRemove: false,
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// private
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isValidParent : function(c, target){
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return this.innerCt && c.getPositionEl().dom.parentNode == this.innerCt.dom;
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},
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getLayoutTargetSize : function() {
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var target = this.container.getLayoutTarget(), ret;
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if (target) {
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ret = target.getViewSize();
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// IE in strict mode will return a height of 0 on the 1st pass of getViewSize.
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// Use getStyleSize to verify the 0 height, the adjustment pass will then work properly
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// with getViewSize
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if (Ext.isIE && Ext.isStrict && ret.height == 0){
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ret = target.getStyleSize();
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}
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ret.width -= target.getPadding('lr');
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ret.height -= target.getPadding('tb');
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}
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return ret;
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},
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renderAll : function(ct, target) {
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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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Ext.layout.ColumnLayout.superclass.renderAll.call(this, ct, this.innerCt);
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},
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// private
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onLayout : function(ct, target){
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var rs = ct.items.items,
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len = rs.length,
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r,
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m,
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i,
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margins = [];
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this.renderAll(ct, target);
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var size = this.getLayoutTargetSize();
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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 h = size.height,
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ph = h;
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this.innerCt.setSize({height:h});
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// some rows 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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r = rs[i];
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m = r.getPositionEl().getMargins('tb');
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margins[i] = m;
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if(!r.rowHeight){
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ph -= (r.getHeight() + m);
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}
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}
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ph = ph < 0 ? 0 : ph;
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for(i = 0; i < len; i++){
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r = rs[i];
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m = margins[i];
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if(r.rowHeight){
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r.setSize({height: Math.floor(r.rowHeight*ph) - m});
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}
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}
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// Browsers differ as to when they account for scrollbars. We need to re-measure to see if the scrollbar
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// spaces were accounted for properly. If not, re-layout.
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if (Ext.isIE) {
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if (i = target.getStyle('overflow') && i != 'hidden' && !this.adjustmentPass) {
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var ts = this.getLayoutTargetSize();
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if (ts.width != size.width){
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this.adjustmentPass = true;
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this.onLayout(ct, target);
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}
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}
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}
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delete this.adjustmentPass;
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}
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/**
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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['ux.row'] = Ext.ux.layout.RowLayout;
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