shubhadownloader
Version:
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JavaScript
Ext.ns('Ext.ux');
/**
* @class Ext.ux.TabScrollerMenu
* @extends Object
* Plugin (ptype = 'tabscrollermenu') for adding a tab menu to a TabBar is the Tabs overflow.
* @constructor
* @param {Object} config Configuration options
* @ptype tabscrollermenu
*/
Ext.define('Ext.ux.TabScrollerMenu', {
alias: 'plugin.tabscrollermenu',
requires: ['Ext.menu.Menu'],
/**
* @cfg {Number} pageSize How many items to allow per submenu.
*/
pageSize: 10,
/**
* @cfg {Number} maxText How long should the title of each {@link Ext.menu.Item} be.
*/
maxText: 15,
/**
* @cfg {String} menuPrefixText Text to prefix the submenus.
*/
menuPrefixText: 'Items',
constructor: function(config) {
Ext.apply(this, config);
},
//private
init: function(tabPanel) {
var me = this;
me.tabPanel = tabPanel;
tabPanel.on({
render: function() {
me.tabBar = tabPanel.tabBar;
me.layout = me.tabBar.layout;
me.layout.overflowHandler.handleOverflow = Ext.Function.bind(me.showButton, me);
me.layout.overflowHandler.clearOverflow = Ext.Function.createSequence(me.layout.overflowHandler.clearOverflow, me.hideButton, me);
},
single: true
});
},
showButton: function() {
var me = this,
result = Ext.getClass(me.layout.overflowHandler).prototype.handleOverflow.apply(me.layout.overflowHandler, arguments);
if (!me.menuButton) {
me.menuButton = me.tabBar.body.createChild({
cls: Ext.baseCSSPrefix + 'tab-tabmenu-right'
}, me.tabBar.body.child('.' + Ext.baseCSSPrefix + 'box-scroller-right'));
me.menuButton.addClsOnOver(Ext.baseCSSPrefix + 'tab-tabmenu-over');
me.menuButton.on('click', me.showTabsMenu, me);
}
me.menuButton.show();
result.reservedSpace += me.menuButton.getWidth();
return result;
},
hideButton: function() {
var me = this;
if (me.menuButton) {
me.menuButton.hide();
}
},
/**
* Returns an the current page size (this.pageSize);
* @return {Number} this.pageSize The current page size.
*/
getPageSize: function() {
return this.pageSize;
},
/**
* Sets the number of menu items per submenu "page size".
* @param {Number} pageSize The page size
*/
setPageSize: function(pageSize) {
this.pageSize = pageSize;
},
/**
* Returns the current maxText length;
* @return {Number} this.maxText The current max text length.
*/
getMaxText: function() {
return this.maxText;
},
/**
* Sets the maximum text size for each menu item.
* @param {Number} t The max text per each menu item.
*/
setMaxText: function(t) {
this.maxText = t;
},
/**
* Returns the current menu prefix text String.;
* @return {String} this.menuPrefixText The current menu prefix text.
*/
getMenuPrefixText: function() {
return this.menuPrefixText;
},
/**
* Sets the menu prefix text String.
* @param {String} t The menu prefix text.
*/
setMenuPrefixText: function(t) {
this.menuPrefixText = t;
},
showTabsMenu: function(e) {
var me = this;
if (me.tabsMenu) {
me.tabsMenu.removeAll();
} else {
me.tabsMenu = new Ext.menu.Menu();
me.tabPanel.on('destroy', me.tabsMenu.destroy, me.tabsMenu);
}
me.generateTabMenuItems();
var target = Ext.get(e.getTarget()),
xy = target.getXY();
//Y param + 24 pixels
xy[1] += 24;
me.tabsMenu.showAt(xy);
},
// private
generateTabMenuItems: function() {
var me = this,
tabPanel = me.tabPanel,
curActive = tabPanel.getActiveTab(),
allItems = tabPanel.items.getRange(),
pageSize = me.getPageSize(),
tabsMenu = me.tabsMenu,
totalItems, numSubMenus, remainder,
i, curPage, menuItems, x, item, start, index;
tabsMenu.suspendLayouts();
allItems = Ext.Array.filter(allItems, function(item){
if (item.id == curActive.id) {
return false;
}
return item.hidden ? !!item.hiddenByLayout : true;
});
totalItems = allItems.length;
numSubMenus = Math.floor(totalItems / pageSize);
remainder = totalItems % pageSize;
if (totalItems > pageSize) {
// Loop through all of the items and create submenus in chunks of 10
for (i = 0; i < numSubMenus; i++) {
curPage = (i + 1) * pageSize;
menuItems = [];
for (x = 0; x < pageSize; x++) {
index = x + curPage - pageSize;
item = allItems[index];
menuItems.push(me.autoGenMenuItem(item));
}
tabsMenu.add({
text: me.getMenuPrefixText() + ' ' + (curPage - pageSize + 1) + ' - ' + curPage,
menu: menuItems
});
}
// remaining items
if (remainder > 0) {
start = numSubMenus * pageSize;
menuItems = [];
for (i = start; i < totalItems; i++) {
item = allItems[i];
menuItems.push(me.autoGenMenuItem(item));
}
me.tabsMenu.add({
text: me.menuPrefixText + ' ' + (start + 1) + ' - ' + (start + menuItems.length),
menu: menuItems
});
}
} else {
for (i = 0; i < totalItems; ++i) {
tabsMenu.add(me.autoGenMenuItem(allItems[i]));
}
}
tabsMenu.resumeLayouts(true);
},
// private
autoGenMenuItem: function(item) {
var maxText = this.getMaxText(),
text = Ext.util.Format.ellipsis(item.title, maxText);
return {
text: text,
handler: this.showTabFromMenu,
scope: this,
disabled: item.disabled,
tabToShow: item,
iconCls: item.iconCls
};
},
// private
showTabFromMenu: function(menuItem) {
this.tabPanel.setActiveTab(menuItem.tabToShow);
}
});