// 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,
+
+ // private
+ isValidParent : function(c, target){
+ return c.getEl().dom.parentNode == this.innerCt.dom;
+ },
+
+ // private
+ onLayout : function(ct, target){
+ var rs = ct.items.items, len = rs.length, r, i;
+
+ if(!this.innerCt){
+ target.addClass('ux-row-layout-ct');
+ this.innerCt = target.createChild({cls:'x-row-inner'});
+ }
+ this.renderAll(ct, this.innerCt);
+
+ var size = target.getViewSize();
+
+ if(size.width < 1 && size.height < 1){ // display none?
+ return;
+ }
+
+ var h = size.height - target.getPadding('tb'),
+ 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];
+ if(!r.rowHeight){
+ ph -= (r.getSize().height + r.getEl().getMargins('tb'));
+ }
+ }
+
+ ph = ph < 0 ? 0 : ph;
+
+ for(i = 0; i < len; i++){
+ r = rs[i];
+ if(r.rowHeight){
+ r.setSize({height: Math.floor(r.rowHeight*ph) - r.getEl().getMargins('tb')});
+ }
+ }
+ }
+
+ /**
+ * @property activeItem
+ * @hide
+ */
+});
+
+Ext.Container.LAYOUTS['ux.row'] = Ext.ux.layout.RowLayout;
+
+
+
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