280 lines
12 KiB
HTML
280 lines
12 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>The source code</title>
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<body onload="prettyPrint(); highlight();">
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<pre class="prettyprint lang-js"><span id='Ext-layout-AnchorLayout'>/**
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</span> * @class Ext.layout.AnchorLayout
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* @extends Ext.layout.ContainerLayout
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* <p>This is a layout that enables anchoring of contained elements relative to the container's dimensions.
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* If the container is resized, all anchored items are automatically rerendered according to their
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* <b><tt>{@link #anchor}</tt></b> rules.</p>
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* <p>This class is intended to be extended or created via the layout:'anchor' {@link Ext.Container#layout}
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* config, and should generally not need to be created directly via the new keyword.</p>
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* <p>AnchorLayout does not have any direct config options (other than inherited ones). By default,
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* AnchorLayout will calculate anchor measurements based on the size of the container itself. However, the
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* container using the AnchorLayout can supply an anchoring-specific config property of <b>anchorSize</b>.
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* If anchorSize is specifed, the layout will use it as a virtual container for the purposes of calculating
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* anchor measurements based on it instead, allowing the container to be sized independently of the anchoring
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* logic if necessary. For example:</p>
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* <pre><code>
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var viewport = new Ext.Viewport({
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layout:'anchor',
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anchorSize: {width:800, height:600},
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items:[{
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title:'Item 1',
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html:'Content 1',
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width:800,
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anchor:'right 20%'
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},{
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title:'Item 2',
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html:'Content 2',
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width:300,
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anchor:'50% 30%'
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},{
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title:'Item 3',
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html:'Content 3',
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width:600,
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anchor:'-100 50%'
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}]
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});
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* </code></pre>
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*/
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Ext.layout.AnchorLayout = Ext.extend(Ext.layout.ContainerLayout, {
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<span id='Ext-layout-AnchorLayout-cfg-anchor'> /**
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</span> * @cfg {String} anchor
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* <p>This configuation option is to be applied to <b>child <tt>items</tt></b> of a container managed by
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* this layout (ie. configured with <tt>layout:'anchor'</tt>).</p><br/>
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*
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* <p>This value is what tells the layout how an item should be anchored to the container. <tt>items</tt>
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* added to an AnchorLayout accept an anchoring-specific config property of <b>anchor</b> which is a string
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* containing two values: the horizontal anchor value and the vertical anchor value (for example, '100% 50%').
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* The following types of anchor values are supported:<div class="mdetail-params"><ul>
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*
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* <li><b>Percentage</b> : Any value between 1 and 100, expressed as a percentage.<div class="sub-desc">
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* The first anchor is the percentage width that the item should take up within the container, and the
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* second is the percentage height. For example:<pre><code>
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// two values specified
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anchor: '100% 50%' // render item complete width of the container and
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// 1/2 height of the container
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// one value specified
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anchor: '100%' // the width value; the height will default to auto
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* </code></pre></div></li>
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*
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* <li><b>Offsets</b> : Any positive or negative integer value.<div class="sub-desc">
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* This is a raw adjustment where the first anchor is the offset from the right edge of the container,
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* and the second is the offset from the bottom edge. For example:<pre><code>
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// two values specified
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anchor: '-50 -100' // render item the complete width of the container
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// minus 50 pixels and
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// the complete height minus 100 pixels.
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// one value specified
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anchor: '-50' // anchor value is assumed to be the right offset value
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// bottom offset will default to 0
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* </code></pre></div></li>
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*
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* <li><b>Sides</b> : Valid values are <tt>'right'</tt> (or <tt>'r'</tt>) and <tt>'bottom'</tt>
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* (or <tt>'b'</tt>).<div class="sub-desc">
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* Either the container must have a fixed size or an anchorSize config value defined at render time in
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* order for these to have any effect.</div></li>
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*
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* <li><b>Mixed</b> : <div class="sub-desc">
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* Anchor values can also be mixed as needed. For example, to render the width offset from the container
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* right edge by 50 pixels and 75% of the container's height use:
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* <pre><code>
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anchor: '-50 75%'
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* </code></pre></div></li>
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*
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*
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* </ul></div>
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*/
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<span id='Ext-layout-AnchorLayout-property-monitorResize'> // private
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</span> monitorResize : true,
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<span id='Ext-layout-AnchorLayout-property-type'> type : 'anchor',
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</span>
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<span id='Ext-layout-AnchorLayout-cfg-defaultAnchor'> /**
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</span> * @cfg {String} defaultAnchor
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*
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* default anchor for all child container items applied if no anchor or specific width is set on the child item. Defaults to '100%'.
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*
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*/
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defaultAnchor : '100%',
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<span id='Ext-layout-AnchorLayout-property-parseAnchorRE'> parseAnchorRE : /^(r|right|b|bottom)$/i,
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</span>
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<span id='Ext-layout-AnchorLayout-method-getLayoutTargetSize'> getLayoutTargetSize : function() {
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</span> 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 width of 0 on the 1st pass of getViewSize.
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// Use getStyleSize to verify the 0 width, the adjustment pass will then work properly
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// with getViewSize
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if (Ext.isIE9m && Ext.isStrict && ret.width == 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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<span id='Ext-layout-AnchorLayout-method-onLayout'> // private
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</span> onLayout : function(container, target) {
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Ext.layout.AnchorLayout.superclass.onLayout.call(this, container, target);
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var size = this.getLayoutTargetSize(),
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containerWidth = size.width,
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containerHeight = size.height,
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overflow = target.getStyle('overflow'),
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components = this.getRenderedItems(container),
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len = components.length,
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boxes = [],
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box,
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anchorWidth,
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anchorHeight,
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component,
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anchorSpec,
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calcWidth,
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calcHeight,
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anchorsArray,
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totalHeight = 0,
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i,
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el;
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if(containerWidth < 20 && containerHeight < 20){
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return;
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}
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// find the container anchoring size
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if(container.anchorSize) {
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if(typeof container.anchorSize == 'number') {
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anchorWidth = container.anchorSize;
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} else {
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anchorWidth = container.anchorSize.width;
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anchorHeight = container.anchorSize.height;
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}
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} else {
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anchorWidth = container.initialConfig.width;
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anchorHeight = container.initialConfig.height;
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}
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for(i = 0; i < len; i++) {
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component = components[i];
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el = component.getPositionEl();
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// If a child container item has no anchor and no specific width, set the child to the default anchor size
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if (!component.anchor && component.items && !Ext.isNumber(component.width) && !(Ext.isIE6 && Ext.isStrict)){
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component.anchor = this.defaultAnchor;
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}
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if(component.anchor) {
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anchorSpec = component.anchorSpec;
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// cache all anchor values
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if(!anchorSpec){
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anchorsArray = component.anchor.split(' ');
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component.anchorSpec = anchorSpec = {
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right: this.parseAnchor(anchorsArray[0], component.initialConfig.width, anchorWidth),
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bottom: this.parseAnchor(anchorsArray[1], component.initialConfig.height, anchorHeight)
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};
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}
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calcWidth = anchorSpec.right ? this.adjustWidthAnchor(anchorSpec.right(containerWidth) - el.getMargins('lr'), component) : undefined;
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calcHeight = anchorSpec.bottom ? this.adjustHeightAnchor(anchorSpec.bottom(containerHeight) - el.getMargins('tb'), component) : undefined;
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if(calcWidth || calcHeight) {
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boxes.push({
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component: component,
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width: calcWidth || undefined,
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height: calcHeight || undefined
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});
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}
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}
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}
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for (i = 0, len = boxes.length; i < len; i++) {
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box = boxes[i];
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box.component.setSize(box.width, box.height);
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}
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if (overflow && overflow != 'hidden' && !this.adjustmentPass) {
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var newTargetSize = this.getLayoutTargetSize();
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if (newTargetSize.width != size.width || newTargetSize.height != size.height){
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this.adjustmentPass = true;
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this.onLayout(container, target);
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}
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}
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delete this.adjustmentPass;
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},
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<span id='Ext-layout-AnchorLayout-method-parseAnchor'> // private
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</span> parseAnchor : function(a, start, cstart) {
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if (a && a != 'none') {
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var last;
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// standard anchor
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if (this.parseAnchorRE.test(a)) {
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var diff = cstart - start;
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return function(v){
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if(v !== last){
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last = v;
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return v - diff;
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}
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};
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// percentage
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} else if(a.indexOf('%') != -1) {
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var ratio = parseFloat(a.replace('%', ''))*.01;
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return function(v){
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if(v !== last){
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last = v;
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return Math.floor(v*ratio);
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}
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};
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// simple offset adjustment
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} else {
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a = parseInt(a, 10);
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if (!isNaN(a)) {
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return function(v) {
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if (v !== last) {
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last = v;
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return v + a;
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}
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};
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}
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}
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}
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return false;
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},
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<span id='Ext-layout-AnchorLayout-method-adjustWidthAnchor'> // private
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</span> adjustWidthAnchor : function(value, comp){
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return value;
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},
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<span id='Ext-layout-AnchorLayout-method-adjustHeightAnchor'> // private
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</span> adjustHeightAnchor : function(value, comp){
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return value;
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}
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<span id='Ext-layout-AnchorLayout-property-activeItem'> /**
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</span> * @property activeItem
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* @hide
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*/
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});
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Ext.Container.LAYOUTS['anchor'] = Ext.layout.AnchorLayout;
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</pre>
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</body>
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