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+ <pre class="prettyprint lang-js"><span id='Ext-layout-container-boxOverflow-Menu'>/**
+</span> * @class Ext.layout.container.boxOverflow.Menu
+ * @extends Ext.layout.container.boxOverflow.None
+ * @private
+ */
+Ext.define('Ext.layout.container.boxOverflow.Menu', {
+
+ /* Begin Definitions */
+
+ extend: 'Ext.layout.container.boxOverflow.None',
+ requires: ['Ext.toolbar.Separator', 'Ext.button.Button'],
+ alternateClassName: 'Ext.layout.boxOverflow.Menu',
+
+ /* End Definitions */
+
+<span id='Ext-layout-container-boxOverflow-Menu-cfg-afterCtCls'> /**
+</span> * @cfg {String} afterCtCls
+ * CSS class added to the afterCt element. This is the element that holds any special items such as scrollers,
+ * which must always be present at the rightmost edge of the Container
+ */
+
+<span id='Ext-layout-container-boxOverflow-Menu-property-noItemsMenuText'> /**
+</span> * @property noItemsMenuText
+ * @type String
+ * HTML fragment to render into the toolbar overflow menu if there are no items to display
+ */
+ noItemsMenuText : '<div class="' + Ext.baseCSSPrefix + 'toolbar-no-items">(None)</div>',
+
+ constructor: function(layout) {
+ var me = this;
+
+ me.callParent(arguments);
+
+ // Before layout, we need to re-show all items which we may have hidden due to a previous overflow.
+ layout.beforeLayout = Ext.Function.createInterceptor(layout.beforeLayout, this.clearOverflow, this);
+
+ me.afterCtCls = me.afterCtCls || Ext.baseCSSPrefix + 'box-menu-' + layout.parallelAfter;
+<span id='Ext-layout-container-boxOverflow-Menu-property-menuItems'> /**
+</span> * @property menuItems
+ * @type Array
+ * Array of all items that are currently hidden and should go into the dropdown menu
+ */
+ me.menuItems = [];
+ },
+
+ onRemove: function(comp){
+ Ext.Array.remove(this.menuItems, comp);
+ },
+
+ handleOverflow: function(calculations, targetSize) {
+ var me = this,
+ layout = me.layout,
+ methodName = 'get' + layout.parallelPrefixCap,
+ newSize = {},
+ posArgs = [null, null];
+
+ me.callParent(arguments);
+ this.createMenu(calculations, targetSize);
+ newSize[layout.perpendicularPrefix] = targetSize[layout.perpendicularPrefix];
+ newSize[layout.parallelPrefix] = targetSize[layout.parallelPrefix] - me.afterCt[methodName]();
+
+ // Center the menuTrigger button.
+ // TODO: Should we emulate align: 'middle' like this, or should we 'stretchmax' the menuTrigger?
+ posArgs[layout.perpendicularSizeIndex] = (calculations.meta.maxSize - me.menuTrigger['get' + layout.perpendicularPrefixCap]()) / 2;
+ me.menuTrigger.setPosition.apply(me.menuTrigger, posArgs);
+
+ return { targetSize: newSize };
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-clearOverflow'> /**
+</span> * @private
+ * Called by the layout, when it determines that there is no overflow.
+ * Also called as an interceptor to the layout's onLayout method to reshow
+ * previously hidden overflowing items.
+ */
+ clearOverflow: function(calculations, targetSize) {
+ var me = this,
+ newWidth = targetSize ? targetSize.width + (me.afterCt ? me.afterCt.getWidth() : 0) : 0,
+ items = me.menuItems,
+ i = 0,
+ length = items.length,
+ item;
+
+ me.hideTrigger();
+ for (; i < length; i++) {
+ items[i].show();
+ }
+ items.length = 0;
+
+ return targetSize ? {
+ targetSize: {
+ height: targetSize.height,
+ width : newWidth
+ }
+ } : null;
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-showTrigger'> /**
+</span> * @private
+ */
+ showTrigger: function() {
+ this.menuTrigger.show();
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-hideTrigger'> /**
+</span> * @private
+ */
+ hideTrigger: function() {
+ if (this.menuTrigger !== undefined) {
+ this.menuTrigger.hide();
+ }
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-beforeMenuShow'> /**
+</span> * @private
+ * Called before the overflow menu is shown. This constructs the menu's items, caching them for as long as it can.
+ */
+ beforeMenuShow: function(menu) {
+ var me = this,
+ items = me.menuItems,
+ i = 0,
+ len = items.length,
+ item,
+ prev;
+
+ var needsSep = function(group, prev){
+ return group.isXType('buttongroup') && !(prev instanceof Ext.toolbar.Separator);
+ };
+
+ me.clearMenu();
+ menu.removeAll();
+
+ for (; i < len; i++) {
+ item = items[i];
+
+ // Do not show a separator as a first item
+ if (!i && (item instanceof Ext.toolbar.Separator)) {
+ continue;
+ }
+ if (prev && (needsSep(item, prev) || needsSep(prev, item))) {
+ menu.add('-');
+ }
+
+ me.addComponentToMenu(menu, item);
+ prev = item;
+ }
+
+ // put something so the menu isn't empty if no compatible items found
+ if (menu.items.length < 1) {
+ menu.add(me.noItemsMenuText);
+ }
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-createMenuConfig'> /**
+</span> * @private
+ * Returns a menu config for a given component. This config is used to create a menu item
+ * to be added to the expander menu
+ * @param {Ext.Component} component The component to create the config for
+ * @param {Boolean} hideOnClick Passed through to the menu item
+ */
+ createMenuConfig : function(component, hideOnClick) {
+ var config = Ext.apply({}, component.initialConfig),
+ group = component.toggleGroup;
+
+ Ext.copyTo(config, component, [
+ 'iconCls', 'icon', 'itemId', 'disabled', 'handler', 'scope', 'menu'
+ ]);
+
+ Ext.apply(config, {
+ text : component.overflowText || component.text,
+ hideOnClick: hideOnClick,
+ destroyMenu: false
+ });
+
+ if (group || component.enableToggle) {
+ Ext.apply(config, {
+ group : group,
+ checked: component.pressed,
+ listeners: {
+ checkchange: function(item, checked){
+ component.toggle(checked);
+ }
+ }
+ });
+ }
+
+ delete config.ownerCt;
+ delete config.xtype;
+ delete config.id;
+ return config;
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-addComponentToMenu'> /**
+</span> * @private
+ * Adds the given Toolbar item to the given menu. Buttons inside a buttongroup are added individually.
+ * @param {Ext.menu.Menu} menu The menu to add to
+ * @param {Ext.Component} component The component to add
+ */
+ addComponentToMenu : function(menu, component) {
+ var me = this;
+ if (component instanceof Ext.toolbar.Separator) {
+ menu.add('-');
+ } else if (component.isComponent) {
+ if (component.isXType('splitbutton')) {
+ menu.add(me.createMenuConfig(component, true));
+
+ } else if (component.isXType('button')) {
+ menu.add(me.createMenuConfig(component, !component.menu));
+
+ } else if (component.isXType('buttongroup')) {
+ component.items.each(function(item){
+ me.addComponentToMenu(menu, item);
+ });
+ } else {
+ menu.add(Ext.create(Ext.getClassName(component), me.createMenuConfig(component)));
+ }
+ }
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-clearMenu'> /**
+</span> * @private
+ * Deletes the sub-menu of each item in the expander menu. Submenus are created for items such as
+ * splitbuttons and buttongroups, where the Toolbar item cannot be represented by a single menu item
+ */
+ clearMenu : function() {
+ var menu = this.moreMenu;
+ if (menu && menu.items) {
+ menu.items.each(function(item) {
+ if (item.menu) {
+ delete item.menu;
+ }
+ });
+ }
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-createMenu'> /**
+</span> * @private
+ * Creates the overflow trigger and menu used when enableOverflow is set to true and the items
+ * in the layout are too wide to fit in the space available
+ */
+ createMenu: function(calculations, targetSize) {
+ var me = this,
+ layout = me.layout,
+ startProp = layout.parallelBefore,
+ sizeProp = layout.parallelPrefix,
+ available = targetSize[sizeProp],
+ boxes = calculations.boxes,
+ i = 0,
+ len = boxes.length,
+ box;
+
+ if (!me.menuTrigger) {
+ me.createInnerElements();
+
+<span id='Ext-layout-container-boxOverflow-Menu-property-menu'> /**
+</span> * @private
+ * @property menu
+ * @type Ext.menu.Menu
+ * The expand menu - holds items for every item that cannot be shown
+ * because the container is currently not large enough.
+ */
+ me.menu = Ext.create('Ext.menu.Menu', {
+ hideMode: 'offsets',
+ listeners: {
+ scope: me,
+ beforeshow: me.beforeMenuShow
+ }
+ });
+
+<span id='Ext-layout-container-boxOverflow-Menu-property-menuTrigger'> /**
+</span> * @private
+ * @property menuTrigger
+ * @type Ext.button.Button
+ * The expand button which triggers the overflow menu to be shown
+ */
+ me.menuTrigger = Ext.create('Ext.button.Button', {
+ ownerCt : me.layout.owner, // To enable the Menu to ascertain a valid zIndexManager owner in the same tree
+ iconCls : Ext.baseCSSPrefix + layout.owner.getXType() + '-more-icon',
+ ui : layout.owner instanceof Ext.toolbar.Toolbar ? 'default-toolbar' : 'default',
+ menu : me.menu,
+ getSplitCls: function() { return '';},
+ renderTo: me.afterCt
+ });
+ }
+ me.showTrigger();
+ available -= me.afterCt.getWidth();
+
+ // Hide all items which are off the end, and store them to allow them to be restored
+ // before each layout operation.
+ me.menuItems.length = 0;
+ for (; i < len; i++) {
+ box = boxes[i];
+ if (box[startProp] + box[sizeProp] > available) {
+ me.menuItems.push(box.component);
+ box.component.hide();
+ }
+ }
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-createInnerElements'> /**
+</span> * @private
+ * Creates the beforeCt, innerCt and afterCt elements if they have not already been created
+ * @param {Ext.container.Container} container The Container attached to this Layout instance
+ * @param {Ext.core.Element} target The target Element
+ */
+ createInnerElements: function() {
+ var me = this,
+ target = me.layout.getRenderTarget();
+
+ if (!this.afterCt) {
+ target.addCls(Ext.baseCSSPrefix + me.layout.direction + '-box-overflow-body');
+ this.afterCt = target.insertSibling({cls: Ext.layout.container.Box.prototype.innerCls + ' ' + this.afterCtCls}, 'before');
+ }
+ },
+
+<span id='Ext-layout-container-boxOverflow-Menu-method-destroy'> /**
+</span> * @private
+ */
+ destroy: function() {
+ Ext.destroy(this.menu, this.menuTrigger);
+ }
+});</pre>
+</body>
+</html>
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