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9 <pre class="prettyprint lang-js">/*!
10 * Ext JS Library 3.2.1
11 * Copyright(c) 2006-2010 Ext JS, Inc.
13 * http://www.extjs.com/license
15 <div id="cls-Ext.layout.ContainerLayout"></div>/**
16 * @class Ext.layout.ContainerLayout
17 * <p>This class is intended to be extended or created via the <tt><b>{@link Ext.Container#layout layout}</b></tt>
18 * configuration property. See <tt><b>{@link Ext.Container#layout}</b></tt> for additional details.</p>
20 Ext.layout.ContainerLayout = Ext.extend(Object, {
21 <div id="cfg-Ext.layout.ContainerLayout-extraCls"></div>/**
22 * @cfg {String} extraCls
23 * <p>An optional extra CSS class that will be added to the container. This can be useful for adding
24 * customized styles to the container or any of its children using standard CSS rules. See
25 * {@link Ext.Component}.{@link Ext.Component#ctCls ctCls} also.</p>
26 * <p><b>Note</b>: <tt>extraCls</tt> defaults to <tt>''</tt> except for the following classes
27 * which assign a value by default:
28 * <div class="mdetail-params"><ul>
29 * <li>{@link Ext.layout.AbsoluteLayout Absolute Layout} : <tt>'x-abs-layout-item'</tt></li>
30 * <li>{@link Ext.layout.Box Box Layout} : <tt>'x-box-item'</tt></li>
31 * <li>{@link Ext.layout.ColumnLayout Column Layout} : <tt>'x-column'</tt></li>
33 * To configure the above Classes with an extra CSS class append to the default. For example,
34 * for ColumnLayout:<pre><code>
35 * extraCls: 'x-column custom-class'
39 <div id="cfg-Ext.layout.ContainerLayout-renderHidden"></div>/**
40 * @cfg {Boolean} renderHidden
41 * True to hide each contained item on render (defaults to false).
44 <div id="prop-Ext.layout.ContainerLayout-activeItem"></div>/**
45 * A reference to the {@link Ext.Component} that is active. For example, <pre><code>
46 * if(myPanel.layout.activeItem.id == 'item-1') { ... }
48 * <tt>activeItem</tt> only applies to layout styles that can display items one at a time
49 * (like {@link Ext.layout.AccordionLayout}, {@link Ext.layout.CardLayout}
50 * and {@link Ext.layout.FitLayout}). Read-only. Related to {@link Ext.Container#activeItem}.
51 * @type {Ext.Component}
52 * @property activeItem
60 constructor : function(config){
61 this.id = Ext.id(null, 'ext-layout-');
62 Ext.apply(this, config);
67 /* Workaround for how IE measures autoWidth elements. It prefers bottom-up measurements
68 whereas other browser prefer top-down. We will hide all target child elements before we measure and
69 put them back to get an accurate measurement.
71 IEMeasureHack : function(target, viewFlag) {
72 var tChildren = target.dom.childNodes, tLen = tChildren.length, c, d = [], e, i, ret;
73 for (i = 0 ; i < tLen ; i++) {
77 d[i] = e.getStyle('display');
78 e.setStyle({display: 'none'});
81 ret = target ? target.getViewSize(viewFlag) : {};
82 for (i = 0 ; i < tLen ; i++) {
86 e.setStyle({display: d[i]});
92 // Placeholder for the derived layouts
93 getLayoutTargetSize : Ext.EmptyFn,
97 var ct = this.container, target = ct.getLayoutTarget();
98 if(!(this.hasLayout || Ext.isEmpty(this.targetCls))){
99 target.addClass(this.targetCls);
101 this.onLayout(ct, target);
102 ct.fireEvent('afterlayout', ct, this);
106 onLayout : function(ct, target){
107 this.renderAll(ct, target);
111 isValidParent : function(c, target){
112 return target && c.getPositionEl().dom.parentNode == (target.dom || target);
116 renderAll : function(ct, target){
117 var items = ct.items.items, i, c, len = items.length;
118 for(i = 0; i < len; i++) {
120 if(c && (!c.rendered || !this.isValidParent(c, target))){
121 this.renderItem(c, i, target);
128 * Renders the given Component into the target Element. If the Component is already rendered,
129 * it is moved to the provided target instead.
130 * @param {Ext.Component} c The Component to render
131 * @param {Number} position The position within the target to render the item to
132 * @param {Ext.Element} target The target Element
134 renderItem : function(c, position, target){
137 c.render(target, position);
138 this.configureItem(c, position);
139 } else if (!this.isValidParent(c, target)) {
140 if (Ext.isNumber(position)) {
141 position = target.dom.childNodes[position];
144 target.dom.insertBefore(c.getPositionEl().dom, position || null);
145 c.container = target;
146 this.configureItem(c, position);
152 // Get all rendered items to lay out.
153 getRenderedItems: function(ct){
154 var t = ct.getLayoutTarget(), cti = ct.items.items, len = cti.length, i, c, items = [];
155 for (i = 0; i < len; i++) {
156 if((c = cti[i]).rendered && this.isValidParent(c, t)){
165 * Applies extraCls and hides the item if renderHidden is true
167 configureItem: function(c, position){
169 var t = c.getPositionEl ? c.getPositionEl() : c;
170 t.addClass(this.extraCls);
173 // If we are forcing a layout, do so *before* we hide so elements have height/width
174 if (c.doLayout && this.forceLayout) {
177 if (this.renderHidden && c != this.activeItem) {
182 onRemove: function(c){
183 if(this.activeItem == c){
184 delete this.activeItem;
186 if(c.rendered && this.extraCls){
187 var t = c.getPositionEl ? c.getPositionEl() : c;
188 t.removeClass(this.extraCls);
192 afterRemove: function(c){
194 c.removeMode = 'container';
195 delete c.removeRestore;
200 onResize: function(){
201 var ct = this.container,
206 if(b = ct.bufferResize && ct.shouldBufferLayout()){
207 if(!this.resizeTask){
208 this.resizeTask = new Ext.util.DelayedTask(this.runLayout, this);
209 this.resizeBuffer = Ext.isNumber(b) ? b : 50;
211 ct.layoutPending = true;
212 this.resizeTask.delay(this.resizeBuffer);
218 runLayout: function(){
219 var ct = this.container;
222 delete ct.layoutPending;
226 setContainer : function(ct){
227 <div id="prop-Ext.layout.ContainerLayout-if"></div>/**
228 * This monitorResize flag will be renamed soon as to avoid confusion
229 * with the Container version which hooks onWindowResize to doLayout
231 * monitorResize flag in this context attaches the resize event between
232 * a container and it's layout
234 if(this.monitorResize && ct != this.container){
235 var old = this.container;
237 old.un(old.resizeEvent, this.onResize, this);
240 ct.on(ct.resizeEvent, this.onResize, this);
246 <div id="method-Ext.layout.ContainerLayout-parseMargins"></div>/**
247 * Parses a number or string representing margin sizes into an object. Supports CSS-style margin declarations
248 * (e.g. 10, "10", "10 10", "10 10 10" and "10 10 10 10" are all valid options and would return the same result)
249 * @param {Number|String} v The encoded margins
250 * @return {Object} An object with margin sizes for top, right, bottom and left
252 parseMargins : function(v){
253 if (Ext.isNumber(v)) {
256 var ms = v.split(' '),
260 ms[1] = ms[2] = ms[3] = ms[0];
261 } else if(len == 2) {
264 } else if(len == 3) {
269 top :parseInt(ms[0], 10) || 0,
270 right :parseInt(ms[1], 10) || 0,
271 bottom:parseInt(ms[2], 10) || 0,
272 left :parseInt(ms[3], 10) || 0
276 <div id="prop-Ext.layout.ContainerLayout-fieldTpl"></div>/**
277 * The {@link Ext.Template Ext.Template} used by Field rendering layout classes (such as
278 * {@link Ext.layout.FormLayout}) to create the DOM structure of a fully wrapped,
279 * labeled and styled form Field. A default Template is supplied, but this may be
280 * overriden to create custom field structures. The template processes values returned from
281 * {@link Ext.layout.FormLayout#getTemplateArgs}.
285 fieldTpl: (function() {
286 var t = new Ext.Template(
287 '<div class="x-form-item {itemCls}" tabIndex="-1">',
288 '<label for="{id}" style="{labelStyle}" class="x-form-item-label">{label}{labelSeparator}</label>',
289 '<div class="x-form-element" id="x-form-el-{id}" style="{elementStyle}">',
290 '</div><div class="{clearCls}"></div>',
293 t.disableFormats = true;
298 * Destroys this layout. This is a template method that is empty by default, but should be implemented
299 * by subclasses that require explicit destruction to purge event handlers or remove DOM nodes.
302 destroy : function(){
303 // Stop any buffered layout tasks
304 if(this.resizeTask && this.resizeTask.cancel){
305 this.resizeTask.cancel();
307 if(!Ext.isEmpty(this.targetCls)){
308 var target = this.container.getLayoutTarget();
310 target.removeClass(this.targetCls);