Upgrade to ExtJS 4.0.0 - Released 04/26/2011

[extjs.git] / src / tab / Bar.js

diff --git a/src/tab/Bar.js b/src/tab/Bar.js
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+++ b/src/tab/Bar.js
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+/**
+ * @author Ed Spencer
+ * @class Ext.tab.Bar
+ * @extends Ext.panel.Header
+ * <p>TabBar is used internally by a {@link Ext.tab.Panel TabPanel} and wouldn't usually need to be created manually.</p>
+ *
+ * @xtype tabbar
+ */
+Ext.define('Ext.tab.Bar', {
+    extend: 'Ext.panel.Header',
+    alias: 'widget.tabbar',
+    baseCls: Ext.baseCSSPrefix + 'tab-bar',
+
+    requires: [
+        'Ext.tab.Tab',
+        'Ext.FocusManager'
+    ],
+
+    // @private
+    defaultType: 'tab',
+
+    /**
+     * @cfg Boolean plain
+     * True to not show the full background on the tabbar
+     */
+    plain: false,
+
+    // @private
+    renderTpl: [
+        '<div class="{baseCls}-body<tpl if="ui"> {baseCls}-body-{ui}<tpl for="uiCls"> {parent.baseCls}-body-{parent.ui}-{.}</tpl></tpl>"<tpl if="bodyStyle"> style="{bodyStyle}"</tpl>></div>',
+        '<div class="{baseCls}-strip<tpl if="ui"> {baseCls}-strip-{ui}<tpl for="uiCls"> {parent.baseCls}-strip-{parent.ui}-{.}</tpl></tpl>"></div>'
+    ],
+
+    /**
+     * @cfg {Number} minTabWidth The minimum width for each tab. Defaults to <tt>30</tt>.
+     */
+    minTabWidth: 30,
+
+    /**
+     * @cfg {Number} maxTabWidth The maximum width for each tab. Defaults to <tt>undefined</tt>.
+     */
+    maxTabWidth: undefined,
+
+    // @private
+    initComponent: function() {
+        var me = this,
+            keys;
+
+        if (me.plain) {
+            me.setUI(me.ui + '-plain');
+        }
+        
+        me.addClsWithUI(me.dock);
+
+        me.addEvents(
+            /**
+             * @event change
+             * Fired when the currently-active tab has changed
+             * @param {Ext.tab.Bar} tabBar The TabBar
+             * @param {Ext.Tab} tab The new Tab
+             * @param {Ext.Component} card The card that was just shown in the TabPanel
+             */
+            'change'
+        );
+
+        Ext.applyIf(this.renderSelectors, {
+            body : '.' + this.baseCls + '-body',
+            strip: '.' + this.baseCls + '-strip'
+        });
+        me.callParent(arguments);
+
+        // TabBar must override the Header's align setting.
+        me.layout.align = (me.orientation == 'vertical') ? 'left' : 'top';
+        me.layout.overflowHandler = Ext.create('Ext.layout.container.boxOverflow.Scroller', me.layout);
+        me.items.removeAt(me.items.getCount() - 1);
+        me.items.removeAt(me.items.getCount() - 1);
+        
+        // Subscribe to Ext.FocusManager for key navigation
+        keys = me.orientation == 'vertical' ? ['up', 'down'] : ['left', 'right'];
+        Ext.FocusManager.subscribe(me, {
+            keys: keys
+        });
+    },
+
+    // @private
+    onAdd: function(tab) {
+        var me = this,
+            tabPanel = me.tabPanel,
+            hasOwner = !!tabPanel;
+
+        me.callParent(arguments);
+        tab.position = me.dock;
+        if (hasOwner) {
+            tab.minWidth = tabPanel.minTabWidth;
+        }
+        else {
+            tab.minWidth = me.minTabWidth + (tab.iconCls ? 25 : 0);
+        }
+        tab.maxWidth = me.maxTabWidth || (hasOwner ? tabPanel.maxTabWidth : undefined);
+    },
+
+    // @private
+    afterRender: function() {
+        var me = this;
+
+        me.mon(me.el, {
+            scope: me,
+            click: me.onClick,
+            delegate: '.' + Ext.baseCSSPrefix + 'tab'
+        });
+        me.callParent(arguments);
+        
+    },
+
+    afterComponentLayout : function() {
+        var me = this;
+        
+        me.callParent(arguments);
+        me.strip.setWidth(me.el.getWidth());
+    },
+
+    // @private
+    onClick: function(e, target) {
+        // The target might not be a valid tab el.
+        var tab = Ext.getCmp(target.id),
+            tabPanel = this.tabPanel;
+
+        target = e.getTarget();
+
+        if (tab && tab.isDisabled && !tab.isDisabled()) {
+            if (tab.closable && target === tab.closeEl.dom) {
+                tab.onCloseClick();
+            } else {
+                this.setActiveTab(tab);
+                if (tabPanel) {
+                    tabPanel.setActiveTab(tab.card);
+                }
+                tab.focus();
+            }
+        }
+    },
+
+    /**
+     * @private
+     * Closes the given tab by removing it from the TabBar and removing the corresponding card from the TabPanel
+     * @param {Ext.Tab} tab The tab to close
+     */
+    closeTab: function(tab) {
+        var card    = tab.card,
+            tabPanel = this.tabPanel,
+            nextTab;
+
+        if (tab.active && this.items.getCount() > 1) {
+            nextTab = tab.next('tab') || this.items.items[0];
+            this.setActiveTab(nextTab);
+            if (tabPanel) {
+                tabPanel.setActiveTab(nextTab.card);
+            }
+        }
+        this.remove(tab);
+
+        if (tabPanel && card) {
+            tabPanel.remove(card);
+        }
+        
+        if (nextTab) {
+            nextTab.focus();
+        }
+    },
+
+    /**
+     * @private
+     * Marks the given tab as active
+     * @param {Ext.Tab} tab The tab to mark active
+     */
+    setActiveTab: function(tab) {
+        if (tab.disabled) {
+            return;
+        }
+        var me = this;
+        if (me.activeTab) {
+            me.activeTab.deactivate();
+        }
+        tab.activate();
+        
+        if (me.rendered) {
+            me.layout.layout();
+            tab.el.scrollIntoView(me.layout.getRenderTarget());
+        }
+        me.activeTab = tab;
+        me.fireEvent('change', me, tab, tab.card);
+    }
+});
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