ig_webcombo3_1.js

研究怎样通过手写代码来完成自动生成代码

	}
	else {
		if(this.Dropped == false)
			return;
		var grid = igcmbo_getElementById(this.ClientUniqueId + "_container");
 		if(igcmbo_fireEvent(this.ClientUniqueId,this.Events.BeforeCloseUp,"(\""+this.ClientUniqueId+"\");")) {
 			return;
		}
		if(this.webGrid)
			this.webGrid.Element.setAttribute("noOnResize",true);
		grid.style.visibility = 'hidden'; 
		grid.style.display = "none"; 
		this.Dropped = false;		
		if(this.HideDropDowns) igcmbo_hideDropDowns(false);
		var inputbox = igcmbo_getElementById(this.ClientUniqueId + "_input");
		igcmbo_currentDropped = null;
 		igcmbo_fireEvent(this.ClientUniqueId,this.Events.AfterCloseUp,"(\""+this.ClientUniqueId+"\");");
		if(this.webGrid){
			igcmbo_wgNoResize=this.webGrid;
	 		setTimeout(igcmbo_clearnoOnResize, 100);
		}
	}
}
function igcmbo_clearInternalDrop() {
	if(igcmbo_currentDropped) igcmbo_currentDropped._internalDrop = null;
}
var igcmbo_wgNoResize=null;
function igcmbo_clearnoOnResize() {
	if(igcmbo_wgNoResize){
		igcmbo_wgNoResize.Element.removeAttribute("noOnResize");
		igcmbo_wgNoResize=null;
	}
}

function igcmbo_editkeydown(evnt,comboId) {
	var oCombo = igcmbo_getComboById(comboId);
	if(oCombo && oCombo.Loaded) {
		var keyCode = (evnt.keyCode);
		var newValue = igcmbo_srcElement(evnt).value;
    	if(igcmbo_fireEvent(oCombo.ClientUniqueId,oCombo.Events.EditKeyDown,"('"+oCombo.ClientUniqueId+"','"+newValue+"',"+keyCode+");"))
    		return igtbl_cancelEvent(evnt);
		if(oCombo.eventHandlers["keydown"] && oCombo.eventHandlers["keydown"].length>0){
			var ig_event=new ig_EventObject();
			ig_event.event=evnt;
			for(var i=0;i<oCombo.eventHandlers["keydown"].length;i++)
				if(oCombo.eventHandlers["keydown"][i].fListener)
				{
					if(keyCode==9 || keyCode==13 || keyCode==27)
						oCombo.setDisplayValue(newValue,false);
					oCombo.eventHandlers["keydown"][i].fListener(oCombo,ig_event,oCombo.eventHandlers["keydown"][i].oThis);
					if(ig_event.cancel)
						return igtbl_cancelEvent(evnt);
				}
		}				
		if (oCombo.ComboTypeAhead!=0 && igcmbo_isCountableKey(keyCode) )
			oCombo.keyCount++;
		if (!oCombo.Editable&&oCombo.ComboTypeAhead==1)
		{
			if(oCombo.DataTextField.length>0)column=oCombo.getGrid().Bands[0].getColumnFromKey(oCombo.DataTextField)			
			else column=oCombo.getGrid().Bands[0].Columns[0];
			var s=String.fromCharCode(evnt.keyCode);			
			if (igcmbo_isCountableKey(evnt.keyCode)){
				var cell=null;
				var row;
				cell = igcmbo_typeaheadFindCell(oCombo,s, column, oCombo.lastKey);
				if(cell){
					oCombo.lastKey = s;
					text = igcmbo_processTypeAhead(oCombo,oCombo.getGrid(),cell);
					newValue=text;
				}
			}
			else{
				var oText=igcmbo_ProcessNavigationKey(oCombo,column,evnt.keyCode,evnt);
				if (oText) newValue=oText;
			}
		}
		oCombo.updatePostField(newValue);
		oCombo.displayValue = newValue;
		if(keyCode==38 || keyCode==40)
			return igtbl_cancelEvent(evnt);
	}
}

// private function
// used to determine what keys will trigger type ahead counter increment/decrements
function igcmbo_isCountableKey(keyCode){		
	if (keyCode<32)
		return false;
	switch(keyCode){
		//end//right//home//left
		case 35: case 39: case 36: case 37:
		//back//del
		case 8: case 46:
		//up//down
		case 38: case 40:
			return false;
			break;
	}	
	return true;
}
// private function
function igcmbo_arrowKeyNavigation(oCombo, oGrid, oRow, column){
	var text = null;
	if(oRow != null){
		oGrid.setActiveRow(oRow);
		oGrid.clearSelectionAll();
		oRow.setSelected(true);
		oCombo.selectedIndex = oRow.getIndex();
		var cell = oRow.getCell(column.Index);
		text = cell.getValue(true);
		oCombo.updateValue(text, true);		
		if(oCombo.DataValueField) oCombo.dataValue=oRow.getCellFromKey(oCombo.DataValueField).getValue();
		igtbl_updatePostField(oGrid.Id);
	}
	return text;
}
// private function
function igcmbo_highlightText(){
	var oInput = document.getElementById(this.ClientUniqueId + "_input");
	if (null==oInput)return;
	var oInTextRange= oInput.createTextRange?oInput.createTextRange():null;
	if (this.Editable){
		if (oInTextRange){
			oInTextRange.moveStart("character",this.ComboTypeAhead==2&&this.lastKey?this.lastKey.length:0);
			oInTextRange.moveEnd("textedit");
			oInTextRange.select();
		}
		else if (oInput.selectionStart){
			oInput.selectionStart =  this.lastKey?this.lastKey.length:0;
			oInput.selectionEnd = oInput.value.length;
		}
	}
	else{
		oInput.style.backgroundColor = this.SelBackColor;
		oInput.style.color = this.SelForeColor;
	}
}
// private function
function igcmbo_typeAheadReset(comboId){
	var oCombo = igcmbo_getComboById(comboId);
	if (oCombo){
		oCombo.keyCount=0;
		oCombo.typeAheadTimeout=null;
		if (2==oCombo.ComboTypeAhead)
			oCombo.lastKey="";
	}
}
// private
function igcmbo_typeaheadFindCell(oCombo,charFromCode, column, lastKey){
		var cell=null;
		var re=new RegExp("^"+igtbl_getRegExpSafe(charFromCode),"gi");
		if(lastKey!=charFromCode) cell=column.find(re);
		else if(cell==null){
			cell=column.findNext();
			if(cell==null) cell=column.find(re);
		}
		return cell;
}
//private
function igcmbo_processTypeAhead(oCombo,oGrid,oCell){
	var text=null;
	text=oCell.getValue(true);
	var oRow=oGrid.getActiveRow();
	oGrid.clearSelectionAll();
	if(oRow) oRow.setSelected(false);
	oRow=oCell.getRow();
	oGrid.setActiveRow(oRow);
	oRow.setSelected(true);
	oCombo.selectedIndex=oRow.getIndex();
	oCombo.updateValue(text, true);
	if(oCombo.DataValueField) oCombo.dataValue=oRow.getCellFromKey(oCombo.DataValueField).getValue();
	igtbl_updatePostField(oGrid.Id);
	oCombo.highlightText();								
	return text;
}
	
//private
function igcmbo_ProcessNavigationKey(oCombo,column,keyCode,evnt){
		var oRow=null;
		var oGrid=oCombo.getGrid();
		var oText=null;
		switch(keyCode){
		case 8: case 46:
			if (oCombo.Editable){
				document.selection.createRange().text="";
				oCombo.lastKey=igcmbo_srcElement(evnt).value;
			}
			break;			
		case 40:
			oRow=oGrid.getActiveRow();
			if(oRow!=null){
				oRow.setSelected(false);
				var oRow=oRow.getNextRow();
				oText=igcmbo_arrowKeyNavigation(oCombo,oGrid,oRow,column);
			}
			else if (oGrid.Rows.length>0) oText=igcmbo_arrowKeyNavigation(oCombo,oGrid,oGrid.Rows.getRow(0),column);
			break;
		case 38:				
				oRow = oGrid.getActiveRow();
				if(oRow != null){
					oRow.setSelected(false);
					var oRow = oRow.getPrevRow();
					oText = igcmbo_arrowKeyNavigation(oCombo,oGrid,oRow,column);
				}
				else if (oGrid.Rows.length > 0) oText=igcmbo_arrowKeyNavigation(oCombo,oGrid,oGrid.Rows.getRow(oGrid.Rows.length-1),column);				
				break;
		}
	return oText;
}		
function igcmbo_editkeyup(evnt,comboId) {
	var oCombo = igcmbo_getComboById(comboId);
	if(oCombo&&oCombo.Loaded){
		var keyCode=(evnt.keyCode);
		var charFromCode=String.fromCharCode(evnt.keyCode);
		var newValue = oCombo.Editable ? igcmbo_srcElement(evnt).value:charFromCode;
    	if(igcmbo_fireEvent(oCombo.ClientUniqueId,oCombo.Events.EditKeyUp,"(\""+oCombo.ClientUniqueId+"\",\""+newValue+"\","+keyCode+");"))
    		return igtbl_cancelEvent(evnt);		
		if (0==oCombo.ComboTypeAhead) return;		
		var bCountableKey=igcmbo_isCountableKey(keyCode);
		if (bCountableKey) --oCombo.keyCount;
		var lastKey=oCombo.lastKey;		
		if (2==oCombo.ComboTypeAhead)
			if (oCombo.Editable)charFromCode=newValue;
			else{
				charFromCode=(bCountableKey?(lastKey?lastKey:"")+newValue:null);
				oCombo.lastKey=charFromCode;
			}
		else
			oCombo.lastKey = charFromCode;				
		if (oCombo.keyCount==0){			
			var oGrid=oCombo.getGrid();
			if(oGrid==null) return;
			var column=null;
			if(oCombo.DataTextField.length>0)column=oGrid.Bands[0].getColumnFromKey(oCombo.DataTextField)			
			else {
				var colNo=0;
				column=oGrid.Bands[0].Columns[colNo];
			}
			if(column==null) return;			
			var text;
			var cell;
			var oCurrentRow=null;				
			if(charFromCode&&bCountableKey){				
				cell=igcmbo_typeaheadFindCell(oCombo,charFromCode,column,lastKey);
				if(cell!=null){
					oCombo.lastKey=charFromCode;
					text=igcmbo_processTypeAhead(oCombo,oGrid,cell);
					oCombo.typeAheadTimeout = null;
					oCombo.typeAheadTimeout = setTimeout("igcmbo_typeAheadReset('"+oCombo.ClientUniqueId+"')",1000);					
					if (!oCombo.Editable) newValue=text;
				}
				else {				
					var oEditor=document.getElementById(oCombo.ClientUniqueId + "_input");
					if (!oCombo.Editable){						
						var oActRow=oGrid.getActiveRow();												
						if (oActRow) oEditor.value= oCombo.DataTextField!=null && oCombo.DataTextField!="" ? oActRow.getCellFromKey(oCombo.DataTextField).getValue() : oActRow.getCell(0).getValue(); 
						newValue=oEditor.value;										
						oCombo.highlightText();						
					}
					else  // if editable and no row is found we should move off all rows since this may be a new value
					{
						oGrid.clearSelectionAll();
						oGrid.setActiveRow(null);
						oCombo.selectedIndex = -1;						
			
						//oCombo.updateValue(charFromCode, true);
						//igtbl_updatePostField(oGrid.Id);
						newValue=charFromCode;
								
					}
					oCombo.typeAheadTimeout=setTimeout("igcmbo_typeAheadReset('"+oCombo.ClientUniqueId+"')",1000);
				}
			}
			else{				
				var oText=igcmbo_ProcessNavigationKey(oCombo,column,evnt.keyCode,evnt);
				if (null!=oText) newValue=oText;
			}
		}
		else
			oCombo.typeAheadTimeout=setTimeout("igcmbo_typeAheadReset('"+oCombo.ClientUniqueId+"')",500);
		oCombo.updatePostField(newValue);
		oCombo.displayValue=newValue;
	}
}
function igcmbo_onfocus(evnt,comboId) {
	var oCombo = igcmbo_getComboById(comboId);
	if(!oCombo)
		return;
	oCombo.setFocusTop();
	oCombo.highlightText();
}

function igcmbo_onblur(evnt,comboId) {
	var oCombo = igcmbo_getComboById(comboId);
		
	if(!oCombo || !oCombo.Loaded) 
		return;
		
	// moved this outside the loop 
	var inputbox = igcmbo_getElementById(oCombo.ClientUniqueId + "_input");		
	if (inputbox)
	{
		if (!oCombo.Editable){		
			inputbox.style.backgroundColor = oCombo.BackColor;
			inputbox.style.color = oCombo.ForeColor;
		}
		else{
			var oGrid = oCombo.getGrid();
			var oEditor=document.getElementById(oCombo.ClientUniqueId + "_input");
			var oActRow=oGrid.getActiveRow();
			if (oActRow)
			{			
				var oCellValue = oCombo.DataTextField!=null && oCombo.DataTextField!="" ? oActRow.getCellFromKey(oCombo.DataTextField).getValue():oActRow.getCell(0).getValue(); 
				if (oEditor.value!=oCellValue)				
				{
					oGrid.clearSelectionAll();
					oGrid.setActiveRow(null);	
					oCombo.selectedIndex = -1;
					oCombo.updateValue(oEditor.value, true);
					igtbl_updatePostField(oGrid.Id);
							
				}
			}
			oCombo.updatePostField(oEditor.value);	
		}
	}
	
	if(oCombo!=igcmbo_displaying) 
		return;
	
	
	if (document.all && oCombo.Element.contains(evnt.toElement)) {		
    }
    else {	
		if(oCombo.webGrid != null) {
			var container = igcmbo_getElementById(oCombo.ClientUniqueId + "_container");
			if(oCombo._internalDrop || oCombo.Element.getAttribute("noOnBlur"))
				return;
			if(oCombo.eventHandlers["blur"] && oCombo.eventHandlers["blur"].length>0)
			{
				var ig_event=new ig_EventObject();
				ig_event.event=evnt;
				for(var i=0;i<oCombo.eventHandlers["blur"].length;i++)
					if(oCombo.eventHandlers["blur"][i].fListener)
					{
						oCombo.eventHandlers["blur"][i].fListener(oCombo,ig_event,oCombo.eventHandlers["blur"][i].oThis);
						if(ig_event.cancel)
							return igtbl_cancelEvent(evnt);
					}
			}
		}
    }
}
function igcmbo_setFocusTop() {
	var inputbox = igcmbo_getElementById(this.ClientUniqueId + "_input");
	if(this.Editable)
		inputbox.select();
	else{
		inputbox.style.backgroundColor=this.SelBackColor;
		inputbox.style.color=this.SelForeColor;
	}	
	try{
		if(document.all)inputbox.focus();
	}
	catch(e){}
}

// private - event initialization for combo object
function igcmbo_events(events){
	this.InitializeCombo=events[0];
	this.EditKeyDown=events[1];
	this.EditKeyUp=events[2];
	this.BeforeDropDown=events[3];
	this.AfterDropDown=events[4];
	this.BeforeCloseUp=events[5];
	this.AfterCloseUp=events[6];
	this.BeforeSelectChange=events[7];
	this.AfterSelectChange=events[8];
}

function igcmbo_gridmouseover(gridName, itemId) {
	var grid = igtbl_getGridById(gridName);
	var cell = igtbl_getCellById(itemId);
	if(cell == null)
		return;
	igtbl_clearSelectionAll(gridName);
	igtbl_selectRow(gridName,cell.Row.Element.id);
}

function igcmbo_gridkeydown(gridName, itemId, keyCode) {
	igtbl_clearSelectionAll(gridName);
	var oCombo = igcmbo_currentDropped;
	if(keyCode == 27 || keyCode == 10) {
		oCombo.setDropDown(false);
		oCombo.setFocusTop();
	}
}

function igcmbo_gridrowactivate(gridName, itemId) {	
	var oCombo = igcmbo_getComboByGridName(gridName);
	//var oCombo = igcmbo_currentDropped;
	var row = igtbl_getRowById(itemId);
	if(oCombo == null || row == null)
		return;
	if(oCombo.DataTextField.length > 0) {
		cell = row.getCellFromKey(oCombo.DataTextField);
	}
	else
		cell = row.getCell(0);