这些系统中的。
从网上下的干净的例子,里面也存在对应不齐的情况

解决方案 »

  1.   

    我的demo好像也有,但是不仔细看的话根本就看不出来,你的怎么这么明显额?
      

  2.   

    例子中的确实不是很明显。Ext.form.ComboBox = Ext.extend(Ext.form.TriggerField, {
        defaultAutoCreate : {tag: "input", type: "text", size: "24", autocomplete: "off"},
        listClass: '',
        
        selectedClass: 'x-combo-selected',
        
        triggerClass : 'x-form-arrow-trigger',
        
        shadow:'sides',
        
        listAlign: 'tl-bl?',
        
        maxHeight: 300,
        
        triggerAction: 'query',
        
        minChars : 4,
        
        typeAhead: false,
        
        queryDelay: 500,
        
        pageSize: 0,
        
        selectOnFocus:false,
        
        queryParam: 'query',
        
        loadingText: 'Loading...',
        
        resizable: false,
        
        handleHeight : 8,
        
        editable: true,
        
        allQuery: '',
        
        mode: 'remote',
        
        minListWidth : 70,
        
        forceSelection:false,
        
        typeAheadDelay : 250,
        
        
        
        lazyInit : true,    initComponent : function(){
            Ext.form.ComboBox.superclass.initComponent.call(this);
            this.addEvents(
                
                'expand',
                
                'collapse',
                
                'beforeselect',
                
                'select',
                
                'beforequery'
            );
            if(this.transform){
                this.allowDomMove = false;
                var s = Ext.getDom(this.transform);
                if(!this.hiddenName){
                    this.hiddenName = s.name;
                }
                if(!this.store){
                    this.mode = 'local';
                    var d = [], opts = s.options;
                    for(var i = 0, len = opts.length;i < len; i++){
                        var o = opts[i];
                        var value = (Ext.isIE ? o.getAttributeNode('value').specified : o.hasAttribute('value')) ? o.value : o.text;
                        if(o.selected) {
                            this.value = value;
                        }
                        d.push([value, o.text]);
                    }
                    this.store = new Ext.data.SimpleStore({
                        'id': 0,
                        fields: ['value', 'text'],
                        data : d
                    });
                    this.valueField = 'value';
                    this.displayField = 'text';
                }
                s.name = Ext.id();             if(!this.lazyRender){
                    this.target = true;
                    this.el = Ext.DomHelper.insertBefore(s, this.autoCreate || this.defaultAutoCreate);
                    Ext.removeNode(s);                 this.render(this.el.parentNode);
                }else{
                    Ext.removeNode(s);             }        }
            this.selectedIndex = -1;
            if(this.mode == 'local'){
                if(this.initialConfig.queryDelay === undefined){
                    this.queryDelay = 10;
                }
                if(this.initialConfig.minChars === undefined){
                    this.minChars = 0;
                }
            }
        },        onRender : function(ct, position){
            Ext.form.ComboBox.superclass.onRender.call(this, ct, position);
            if(this.hiddenName){
                this.hiddenField = this.el.insertSibling({tag:'input', type:'hidden', name: this.hiddenName, id: (this.hiddenId||this.hiddenName)},
                        'before', true);
                this.hiddenField.value =
                    this.hiddenValue !== undefined ? this.hiddenValue :
                    this.value !== undefined ? this.value : '';                        this.el.dom.removeAttribute('name');
            }
            if(Ext.isGecko){
                this.el.dom.setAttribute('autocomplete', 'off');
            }        if(!this.lazyInit){
                this.initList();
            }else{
                this.on('focus', this.initList, this, {single: true});
            }        if(!this.editable){
                this.editable = true;
                this.setEditable(false);
            }
        },    initList : function(){
            if(!this.list){
                var cls = 'x-combo-list';            this.list = new Ext.Layer({
                    shadow: this.shadow, cls: [cls, this.listClass].join(' '), constrain:false
                });            var lw = this.listWidth || Math.max(this.wrap.getWidth(), this.minListWidth);
                this.list.setWidth(lw);
                this.list.swallowEvent('mousewheel');
                this.assetHeight = 0;            if(this.title){
                    this.header = this.list.createChild({cls:cls+'-hd', html: this.title});
                    this.assetHeight += this.header.getHeight();
                }            this.innerList = this.list.createChild({cls:cls+'-inner'});
                this.innerList.on('mouseover', this.onViewOver, this);
                this.innerList.on('mousemove', this.onViewMove, this);
                this.innerList.setWidth(lw - this.list.getFrameWidth('lr'))            if(this.pageSize){
                    this.footer = this.list.createChild({cls:cls+'-ft'});
                    this.pageTb = new Ext.PagingToolbar({
                        store:this.store,
                        pageSize: this.pageSize,
                        renderTo:this.footer
                    });
                    this.assetHeight += this.footer.getHeight();
                }            if(!this.tpl){
        
                    this.tpl = '<tpl for="."><div class="'+cls+'-item">{' + this.displayField + '}</div></tpl>';
                }     
                this.view = new Ext.DataView({
                    applyTo: this.innerList,
                    tpl: this.tpl,
                    singleSelect: true,
                    selectedClass: this.selectedClass,
                    itemSelector: this.itemSelector || '.' + cls + '-item'
                });            this.view.on('click', this.onViewClick, this);            this.bindStore(this.store, true);            if(this.resizable){
                    this.resizer = new Ext.Resizable(this.list,  {
                       pinned:true, handles:'se'
                    });
                    this.resizer.on('resize', function(r, w, h){
                        this.maxHeight = h-this.handleHeight-this.list.getFrameWidth('tb')-this.assetHeight;
                        this.listWidth = w;
                        this.innerList.setWidth(w - this.list.getFrameWidth('lr'));
                        this.restrictHeight();
                    }, this);
                    this[this.pageSize?'footer':'innerList'].setStyle('margin-bottom', this.handleHeight+'px');
                }
            }
        },
            bindStore : function(store, initial){
            if(this.store && !initial){
                this.store.un('beforeload', this.onBeforeLoad, this);
                this.store.un('load', this.onLoad, this);
                this.store.un('loadexception', this.collapse, this);
                if(!store){
                    this.store = null;
                    if(this.view){
                        this.view.setStore(null);
                    }
                }
            }
            if(store){
                this.store = Ext.StoreMgr.lookup(store);            this.store.on('beforeload', this.onBeforeLoad, this);
                this.store.on('load', this.onLoad, this);
                this.store.on('loadexception', this.collapse, this);            if(this.view){
                    this.view.setStore(store);
                }
            }
        },        initEvents : function(){
            Ext.form.ComboBox.superclass.initEvents.call(this);        this.keyNav = new Ext.KeyNav(this.el, {
                "up" : function(e){
                    this.inKeyMode = true;
                    this.selectPrev();
                },            "down" : function(e){
                    if(!this.isExpanded()){
                        this.onTriggerClick();
                    }else{
                        this.inKeyMode = true;
                        this.selectNext();
                    }
                },            "enter" : function(e){
                    this.onViewClick();
                                },            "esc" : function(e){
                    this.collapse();
                },            "tab" : function(e){
                    this.onViewClick(false);
                    return true;
                },            scope : this,            doRelay : function(foo, bar, hname){
                    if(hname == 'down' || this.scope.isExpanded()){
                       return Ext.KeyNav.prototype.doRelay.apply(this, arguments);
                    }
                    return true;
                },            forceKeyDown : true
            });
            this.queryDelay = Math.max(this.queryDelay || 10,
                    this.mode == 'local' ? 10 : 250);
            this.dqTask = new Ext.util.DelayedTask(this.initQuery, this);
            if(this.typeAhead){
                this.taTask = new Ext.util.DelayedTask(this.onTypeAhead, this);
            }
            if(this.editable !== false){
                this.el.on("keyup", this.onKeyUp, this);
            }
            if(this.forceSelection){
                this.on('blur', this.doForce, this);
            }
        },    onDestroy : function(){
            if(this.view){
                this.view.el.removeAllListeners();
                this.view.el.remove();
                this.view.purgeListeners();
            }
            if(this.list){
                this.list.destroy();
            }
            this.bindStore(null);
            Ext.form.ComboBox.superclass.onDestroy.call(this);
        },
      

  3.   


            fireKey : function(e){
            if(e.isNavKeyPress() && !this.list.isVisible()){
                this.fireEvent("specialkey", this, e);
            }
        },        onResize: function(w, h){
            Ext.form.ComboBox.superclass.onResize.apply(this, arguments);
            if(this.list && this.listWidth === undefined){
                var lw = Math.max(w, this.minListWidth);
                this.list.setWidth(lw);
                this.innerList.setWidth(lw - this.list.getFrameWidth('lr'));
            }
        },        onDisable: function(){
            Ext.form.ComboBox.superclass.onDisable.apply(this, arguments);
            if(this.hiddenField){
                this.hiddenField.disabled = this.disabled;
            }
        },    
        setEditable : function(value){
            if(value == this.editable){
                return;
            }
            this.editable = value;
            if(!value){
                this.el.dom.setAttribute('readOnly', true);
                this.el.on('mousedown', this.onTriggerClick,  this);
                this.el.addClass('x-combo-noedit');
            }else{
                this.el.dom.setAttribute('readOnly', false);
                this.el.un('mousedown', this.onTriggerClick,  this);
                this.el.removeClass('x-combo-noedit');
            }
        },        onBeforeLoad : function(){
            if(!this.hasFocus){
                return;
            }
            this.innerList.update(this.loadingText ?
                   '<div class="loading-indicator">'+this.loadingText+'</div>' : '');
            this.restrictHeight();
            this.selectedIndex = -1;
        },        onLoad : function(){
            if(!this.hasFocus){
                return;
            }
            if(this.store.getCount() > 0){
                this.expand();
                this.restrictHeight();
                if(this.lastQuery == this.allQuery){
                    if(this.editable){
                        this.el.dom.select();
                    }
                    if(!this.selectByValue(this.value, true)){
                        this.select(0, true);
                    }
                }else{
                    this.selectNext();
                    if(this.typeAhead && this.lastKey != Ext.EventObject.BACKSPACE && this.lastKey != Ext.EventObject.DELETE){
                        this.taTask.delay(this.typeAheadDelay);
                    }
                }
            }else{
                this.onEmptyResults();
            }
                },        onTypeAhead : function(){
            if(this.store.getCount() > 0){
                var r = this.store.getAt(0);
                var newValue = r.data[this.displayField];
                var len = newValue.length;
                var selStart = this.getRawValue().length;
                if(selStart != len){
                    this.setRawValue(newValue);
                    this.selectText(selStart, newValue.length);
                }
            }
        },        onSelect : function(record, index){
            if(this.fireEvent('beforeselect', this, record, index) !== false){
                this.setValue(record.data[this.valueField || this.displayField]);
                this.collapse();
                this.fireEvent('select', this, record, index);
            }
        },    
        getValue : function(){
            if(this.valueField){
                return typeof this.value != 'undefined' ? this.value : '';
            }else{
                return Ext.form.ComboBox.superclass.getValue.call(this);
            }
        },    
        clearValue : function(){
            if(this.hiddenField){
                this.hiddenField.value = '';
            }
            this.setRawValue('');
            this.lastSelectionText = '';
            this.applyEmptyText();
        },    
        setValue : function(v){
            var text = v;
            if(this.valueField){
                var r = this.findRecord(this.valueField, v);
                if(r){
                    text = r.data[this.displayField];
                }else if(this.valueNotFoundText !== undefined){
                    text = this.valueNotFoundText;
                }
            }
            this.lastSelectionText = text;
            if(this.hiddenField){
                this.hiddenField.value = v;
            }
            Ext.form.ComboBox.superclass.setValue.call(this, text);
            this.value = v;
        },        findRecord : function(prop, value){
            var record;
            if(this.store.getCount() > 0){
                this.store.each(function(r){
                    if(r.data[prop] == value){
                        record = r;
                        return false;
                    }
                });
            }
            return record;
        },        onViewMove : function(e, t){
            this.inKeyMode = false;
        },        onViewOver : function(e, t){
            if(this.inKeyMode){             return;
            }
            var item = this.view.findItemFromChild(t);
            if(item){
                var index = this.view.indexOf(item);
                this.select(index, false);
            }
        },        onViewClick : function(doFocus){
            var index = this.view.getSelectedIndexes()[0];
            var r = this.store.getAt(index);
            if(r){
                this.onSelect(r, index);
            }
            if(doFocus !== false){
                this.el.focus();
            }
        },        restrictHeight : function(){
            this.innerList.dom.style.height = '';
            var inner = this.innerList.dom;
            var fw = this.list.getFrameWidth('tb');
            var h = Math.max(inner.clientHeight, inner.offsetHeight, inner.scrollHeight);
            this.innerList.setHeight(h < this.maxHeight ? 'auto' : this.maxHeight);
            this.list.beginUpdate();
            this.list.setHeight(this.innerList.getHeight()+fw+(this.resizable?this.handleHeight:0)+this.assetHeight);
            this.list.alignTo(this.el, this.listAlign);
            this.list.endUpdate();
        },        onEmptyResults : function(){
            this.collapse();
        },    
        isExpanded : function(){
            return this.list && this.list.isVisible();
        },    
        selectByValue : function(v, scrollIntoView){
            if(v !== undefined && v !== null){
                var r = this.findRecord(this.valueField || this.displayField, v);
                if(r){
                    this.select(this.store.indexOf(r), scrollIntoView);
                    return true;
                }
            }
            return false;
        },    
        select : function(index, scrollIntoView){
            this.selectedIndex = index;
            this.view.select(index);
            if(scrollIntoView !== false){
                var el = this.view.getNode(index);
                if(el){
                    this.innerList.scrollChildIntoView(el, false);
                }
            }
        },        selectNext : function(){
            var ct = this.store.getCount();
            if(ct > 0){
                if(this.selectedIndex == -1){
                    this.select(0);
                }else if(this.selectedIndex < ct-1){
                    this.select(this.selectedIndex+1);
                }
            }
        },        selectPrev : function(){
            var ct = this.store.getCount();
            if(ct > 0){
                if(this.selectedIndex == -1){
                    this.select(0);
                }else if(this.selectedIndex != 0){
                    this.select(this.selectedIndex-1);
                }
            }
        },        onKeyUp : function(e){
            if(this.editable !== false && !e.isSpecialKey()){
                this.lastKey = e.getKey();
                this.dqTask.delay(this.queryDelay);
            }
        },        validateBlur : function(){
            return !this.list || !this.list.isVisible();   
        },        initQuery : function(){
            this.doQuery(this.getRawValue());
        },        doForce : function(){
            if(this.el.dom.value.length > 0){
                this.el.dom.value =
                    this.lastSelectionText === undefined ? '' : this.lastSelectionText;
                this.applyEmptyText();
            }
        },    
        doQuery : function(q, forceAll){
            if(q === undefined || q === null){
                q = '';
            }
            var qe = {
                query: q,
                forceAll: forceAll,
                combo: this,
                cancel:false
            };
            if(this.fireEvent('beforequery', qe)===false || qe.cancel){
                return false;
            }
            q = qe.query;
            forceAll = qe.forceAll;
            if(forceAll === true || (q.length >= this.minChars)){
                if(this.lastQuery !== q){
                    this.lastQuery = q;
                    if(this.mode == 'local'){
                        this.selectedIndex = -1;
                        if(forceAll){
                            this.store.clearFilter();
                        }else{
                            this.store.filter(this.displayField, q);
                        }
                        this.onLoad();
                    }else{
                        this.store.baseParams[this.queryParam] = q;
                        this.store.load({
                            params: this.getParams(q)
                        });
                        this.expand();
                    }
                }else{
                    this.selectedIndex = -1;
                    this.onLoad();   
                }
            }
        },        getParams : function(q){
            var p = {};
                    if(this.pageSize){
                p.start = 0;
                p.limit = this.pageSize;
            }
            return p;
        },    
        collapse : function(){
            if(!this.isExpanded()){
                return;
            }
            this.list.hide();
            Ext.getDoc().un('mousewheel', this.collapseIf, this);
            Ext.getDoc().un('mousedown', this.collapseIf, this);
            this.fireEvent('collapse', this);
        },
            collapseIf : function(e){
            if(!e.within(this.wrap) && !e.within(this.list)){
                this.collapse();
            }
        },    
        expand : function(){
            if(this.isExpanded() || !this.hasFocus){
                return;
            }
            this.list.alignTo(this.wrap, this.listAlign);
            this.list.show();
            Ext.getDoc().on('mousewheel', this.collapseIf, this);
            Ext.getDoc().on('mousedown', this.collapseIf, this);
            this.fireEvent('expand', this);
        },            onTriggerClick : function(){
                 
    });
    Ext.reg('combo', Ext.form.ComboBox);