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锁定老帖子 主题：extJs控件之客户端查询
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发表时间：2008-07-21
和大家分享一个我在www.extjs.com上找的插件，该插件可以执行客户端查询，说白了就是只能在本页做查询动作，没有和服务器交互.代码如下 // vim: ts=4:sw=4:nu:fdc=4:nospell
/**
* Search plugin for Ext.grid.GridPanel, Ext.grid.EditorGrid ver. 2.x or subclasses of them
*
* @author Ing. Jozef Sakalos
* @copyright (c) 2008, by Ing. Jozef Sakalos
* @date 17. January 2008
* @version $Id: Ext.ux.grid.Search.js 120 2008-03-31 00:09:05Z jozo $
*
* @license Ext.ux.grid.Search is licensed under the terms of
* the Open Source LGPL 3.0 license. Commercial use is permitted to the extent
* that the code/component(s) do NOT become part of another Open Source or Commercially
* licensed development library or toolkit without explicit permission.
*
* License details: http://www.gnu.org/licenses/lgpl.html
*/
/*global Ext */
Ext.ns('Ext.ux.grid');
/**
* @class Ext.ux.grid.Search
* @extends Ext.util.Observable
* @param {Object} config configuration object
* @constructor
*/
Ext.ux.grid.Search = function(config) {
Ext.apply(this, config);
Ext.ux.grid.Search.superclass.constructor.call(this);
}; // eo constructor
Ext.extend(Ext.ux.grid.Search, Ext.util.Observable, {
/**
* @cfg {String} searchText Text to display on menu button
*/
searchText:'Search'
/**
* @cfg {String} searchTipText Text to display as input tooltip. Set to '' for no tooltip
*/
,searchTipText:'Type a text to search and press Enter'
/**
* @cfg {String} selectAllText Text to display on menu item that selects all fields
*/
,selectAllText:'Select All'
/**
* @cfg {String} position Where to display the search controls. Valid values are top and bottom (defaults to bottom)
* Corresponding toolbar has to exist at least with mimimum configuration tbar:[] for position:top or bbar:[]
* for position bottom. Plugin does NOT create any toolbar.
*/
,position:'bottom'
/**
* @cfg {String} iconCls Icon class for menu button (defaults to icon-magnifier)
*/
,iconCls:'icon-magnifier'
/**
* @cfg {String/Array} checkIndexes Which indexes to check by default. Can be either 'all' for all indexes
* or array of dataIndex names, e.g. ['persFirstName', 'persLastName']
*/
,checkIndexes:'all'
/**
* @cfg {Array} disableIndexes Array of index names to disable (not show in the menu), e.g. ['persTitle', 'persTitle2']
*/
,disableIndexes:[]
/**
* @cfg {String} dateFormat how to format date values. If undefined (the default)
* date is formatted as configured in colummn model
*/
,dateFormat:undefined
/**
* @cfg {Boolean} showSelectAll Select All item is shown in menu if true (defaults to true)
*/
,showSelectAll:true
/**
* @cfg {String} mode Use 'remote' for remote stores or 'local' for local stores. If mode is local
* no data requests are sent to server the grid's store is filtered instead (defaults to 'remote')
*/
,mode:'remote'
/**
* @cfg {Number} width Width of input field in pixels (defaults to 100)
*/
,width:100
/**
* @cfg {String} xtype xtype is usually not used to instantiate this plugin but you have a chance to identify it
*/
,xtype:'gridsearch'
/**
* @cfg {Object} paramNames Params name map (defaults to {fields:'fields', query:'query'}
*/
,paramNames: {
fields:'fields'
,query:'query'
}
/**
* @cfg {String} shortcutKey Key to fucus the input field (defaults to r = Sea_r_ch). Empty string disables shortcut
*/
,shortcutKey:'r'
/**
* @cfg {String} shortcutModifier Modifier for shortcutKey. Valid values: alt, ctrl, shift (defaults to alt)
*/
,shortcutModifier:'alt'
/**
* @cfg {String} align 'left' or 'right' (defaults to 'left')
*/
/**
* @cfg {Number} minLength force user to type this many character before he can make a search
*/
/**
* @cfg {Ext.Panel/String} toolbarContainer Panel (or id of the panel) which contains toolbar we want to render
* search controls to (defaults to this.grid, the grid this plugin is plugged-in into)
*/
// {{{
/**
* private
* @param {Ext.grid.GridPanel/Ext.grid.EditorGrid} grid reference to grid this plugin is used for
*/
,init:function(grid) {
this.grid = grid;
// setup toolbar container if id was given
if('string' === typeof this.toolbarContainer) {
this.toolbarContainer = Ext.getCmp(this.toolbarContainer);
}
// do our processing after grid render and reconfigure
grid.onRender = grid.onRender.createSequence(this.onRender, this);
grid.reconfigure = grid.reconfigure.createSequence(this.reconfigure, this);
} // eo function init
// }}}
// {{{
/**
* private add plugin controls to <b>existing</b> toolbar and calls reconfigure
*/
,onRender:function() {
var panel = this.toolbarContainer || this.grid;
var tb = 'bottom' === this.position ? panel.bottomToolbar : panel.topToolbar;
// add menu
this.menu = new Ext.menu.Menu();
// handle position
if('right' === this.align) {
tb.addFill();
}
else {
tb.addSeparator();
}
// add menu button
tb.add({
text:this.searchText
,menu:this.menu
,iconCls:this.iconCls
});
// add input field (TwinTriggerField in fact)
this.field = new Ext.form.TwinTriggerField({
width:this.width
,selectOnFocus:undefined === this.selectOnFocus ? true : this.selectOnFocus
,trigger1Class:'x-form-clear-trigger'
,trigger2Class:'x-form-search-trigger'
,onTrigger1Click:this.onTriggerClear.createDelegate(this)
,onTrigger2Click:this.onTriggerSearch.createDelegate(this)
,minLength:this.minLength
});
// install event handlers on input field
this.field.on('render', function() {
this.field.el.dom.qtip = this.searchTipText;
// install key map
var map = new Ext.KeyMap(this.field.el, [{
key:Ext.EventObject.ENTER
,scope:this
,fn:this.onTriggerSearch
},{
key:Ext.EventObject.ESC
,scope:this
,fn:this.onTriggerClear
}]);
map.stopEvent = true;
}, this, {single:true});
tb.add(this.field);
// reconfigure
this.reconfigure();
// keyMap
if(this.shortcutKey && this.shortcutModifier) {
var shortcutEl = this.grid.getEl();
var shortcutCfg = [{
key:this.shortcutKey
,scope:this
,stopEvent:true
,fn:function() {
this.field.focus();
}
}];
shortcutCfg[0][this.shortcutModifier] = true;
this.keymap = new Ext.KeyMap(shortcutEl, shortcutCfg);
}
} // eo function onRender
// }}}
// {{{
/**
* private Clear Trigger click handler
*/
,onTriggerClear:function() {
this.field.setValue('');
this.field.focus();
this.onTriggerSearch();
} // eo function onTriggerClear
// }}}
// {{{
/**
* private Search Trigger click handler (executes the search, local or remote)
*/
,onTriggerSearch:function() {
if(!this.field.isValid()) {
return;
}
var val = this.field.getValue();
var store = this.grid.store;
// grid's store filter
if('local' === this.mode) {
store.clearFilter();
if(val) {
store.filterBy(function(r) {
var retval = false;
this.menu.items.each(function(item) {
if(!item.checked || retval) {
return;
}
var rv = r.get(item.dataIndex);
rv = rv instanceof Date ? rv.format(this.dateFormat || r.fields.get(item.dataIndex).dateFormat) : rv;
var re = new RegExp(val, 'gi');
retval = re.test(rv);
}, this);
if(retval) {
return true;
}
return retval;
}, this);
}
else {
}
}
// ask server to filter records
else {
// clear start (necessary if we have paging)
if(store.lastOptions && store.lastOptions.params) {
store.lastOptions.params[store.paramNames.start] = 0;
}
// get fields to search array
var fields = [];
this.menu.items.each(function(item) {
if(item.checked) {
fields.push(item.dataIndex);
}
});
// add fields and query to baseParams of store
delete(store.baseParams[this.paramNames.fields]);
delete(store.baseParams[this.paramNames.query]);
if (store.lastOptions && store.lastOptions.params) {
delete(store.lastOptions.params[this.paramNames.fields]);
delete(store.lastOptions.params[this.paramNames.query]);
}
if(fields.length) {
store.baseParams[this.paramNames.fields] = Ext.encode(fields);
store.baseParams[this.paramNames.query] = val;
}
// reload store
store.reload();
}
} // eo function onTriggerSearch
// }}}
// {{{
/**
* @param {Boolean} true to disable search (TwinTriggerField), false to enable
*/
,setDisabled:function() {
this.field.setDisabled.apply(this.field, arguments);
} // eo function setDisabled
// }}}
// {{{
/**
* Enable search (TwinTriggerField)
*/
,enable:function() {
this.setDisabled(false);
} // eo function enable
// }}}
// {{{
/**
* Enable search (TwinTriggerField)
*/
,disable:function() {
this.setDisabled(true);
} // eo function disable
// }}}
// {{{
/**
* private (re)configures the plugin, creates menu items from column model
*/
,reconfigure:function() {
// {{{
// remove old items
var menu = this.menu;
menu.removeAll();
// add Select All item plus separator
if(this.showSelectAll) {
menu.add(new Ext.menu.CheckItem({
text:this.selectAllText
,checked:!(this.checkIndexes instanceof Array)
,hideOnClick:false
,handler:function(item) {
var checked = ! item.checked;
item.parentMenu.items.each(function(i) {
if(item !== i && i.setChecked) {
i.setChecked(checked);
}
});
}
}),'-');
}
// }}}
// {{{
// add new items
var cm = this.grid.colModel;
Ext.each(cm.config, function(config) {
var disable = false;
if(config.header && config.dataIndex) {
Ext.each(this.disableIndexes, function(item) {
disable = disable ? disable : item === config.dataIndex;
});
if(!disable) {
menu.add(new Ext.menu.CheckItem({
text:config.header
,hideOnClick:false
,checked:'all' === this.checkIndexes
,dataIndex:config.dataIndex
}));
}
}
}, this);
// }}}
// {{{
// check items
if(this.checkIndexes instanceof Array) {
Ext.each(this.checkIndexes, function(di) {
var item = menu.items.find(function(itm) {
return itm.dataIndex === di;
});
if(item) {
item.setChecked(true, true);
}
}, this);
}
// }}}
} // eo function reconfigure
// }}}
}); // eo extend
// eof
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