/*!
+ * Ext JS Library 3.3.0
+ * Copyright(c) 2006-2010 Ext JS, Inc.
+ * licensing@extjs.com
+ * http://www.extjs.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
+ * 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.
+ * RowLayout does not have any direct config options (other than inherited ones), but it does support a
+ * specific config property of rowHeight 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).
+ * 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).
+ * 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 remaining 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:
+ *
+// 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
+ }]
+});
+
+ */
+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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