/******************************************************************************
 *	Copyright (c) 2004 Actuate Corporation and others.
 *	All rights reserved. This program and the accompanying materials 
 *	are made available under the terms of the Eclipse Public License v1.0
 *	which accompanies this distribution, and is available at
 *		http://www.eclipse.org/legal/epl-v10.html
 *	
 *	Contributors:
 *		Actuate Corporation - Initial implementation.
 *****************************************************************************/
 
/**
 *	BirtParameterDialog
 *	...
 */
BirtParameterDialog = Class.create( );

BirtParameterDialog.prototype = Object.extend( new AbstractParameterDialog( ),
{
	/**
	 *	Parameter dialog working state. Whether embedded inside
	 *	designer dialog.
	 */
	__mode : 'frameset',

	/**
	 *	Identify the parameter is null.
	 */
	__isnull : '__isnull',

	/**
	 *	Prefix that identify the parameter is to set Display Text for "select" parameter
	 */
	__isdisplay : '__isdisplay__',
 	
	/**
	 *	Initialization routine required by "ProtoType" lib.
	 *	@return, void
	 */
	initialize : function( id, mode )
	{
		this.__mode = mode;
		
		if ( this.__mode == 'parameter' )
		{
			// Hide dialog title bar if embedded in designer.
			var paramDialogTitleBar = $( id + 'dialogTitleBar' );
			paramDialogTitleBar.style.display = 'none';			
		}
			    
	    this.initializeBase( id );
	    this.__local_installEventHandlers_extend( id );
	},

	/**
	 *	Install native/birt event handlers.
	 *
	 *	@id, toolbar id (optional since there is only one toolbar)
	 *	@return, void
	 */
	__local_installEventHandlers_extend : function( id )
	{
		// Observe "keydown" event
		this.keydown_closure = this.__neh_keydown.bindAsEventListener( this );
		Event.observe( $(id), 'keydown', this.keydown_closure, false );
	},
	
	/**
	 *	Binding data to the dialog UI. Data includes zoom scaling factor.
	 *	@data, data DOM tree (schema TBD)
	 *	@return, void
	 */
	__bind : function( data )
	{
		if ( !data )
		{
			return;
		}
		
		var cascadeParamObj = data.getElementsByTagName( 'CascadeParameter' );
		var confirmObj = data.getElementsByTagName( 'Confirmation' );
		if ( cascadeParamObj.length > 0 )
		{
			this.__propogateCascadeParameter( data );
		}
		else if ( confirmObj.length > 0 )
		{
			this.__close( );
		}
	},

	/**
	 *	Intall the event handlers for cascade parameter.
	 *
	 *	@table_param, container table object.
	 *	@counter, index of possible cascade parameter.
	 *	@return, void
	 */
	__install_cascade_parameter_event_handler : function( table_param, counter )
	{
		var oSC = table_param.getElementsByTagName( "select" );
		var matrix = new Array( );
		var m = 0;
		
		var oTRC = table_param.getElementsByTagName( "TR" );
		for( var i = 0; i < oTRC.length; i++ )
		{
			var oSelect = oTRC[i].getElementsByTagName( "select" );
			var oInput = oTRC[i].getElementsByTagName( "input" );
			var oCascadeFlag = "";
			
			if ( oInput && oInput.length > 0 )
			{
				var oLastInput = oInput[oInput.length - 1];
				if ( oLastInput.name == "isCascade" )
					oCascadeFlag = oLastInput.value;
			}
			
			// find select items to install event listener
			if( oSelect.length > 0 && oCascadeFlag == "true" )
			{
				if ( i < oTRC.length - 1 )
				{
					Event.observe( oSelect[0], 'change', this.__neh_click_select_closure, false );
				}
				
				if( !matrix[m] )
				{
					matrix[m] = {};
				}
				matrix[m].name = oSelect[0].id.substr( 0, oSelect[0].id.length - 10 );
				matrix[m++].value = oSelect[0].value;
			}
		}
		
		this.__cascadingParameter[counter] = matrix;
	},
	
	/**
	 *	Collect parameters, include five cases appear in Birt1.0 Viewer.
	 *
	 *	@return, void
	 */
	collect_parameter : function( )
	{
		// Clear parameter array
		this.__parameter = new Array( );		
				
		var k = 0;
		//oTRC[i] is <tr></tr> section
		var oTRC = document.getElementById( "parameter_table" ).getElementsByTagName( "TR" );
		for( var i = 0; i < oTRC.length; i++ )
		{
			if( !this.__parameter[k] )
			{
				this.__parameter[k] = { };
			}
			
			//input element collection
			var oIEC = oTRC[i].getElementsByTagName( "input" );
			//select element collection
			var oSEC = oTRC[i].getElementsByTagName( "select" );
			//avoid group parameter
			var oTable = oTRC[i].getElementsByTagName( "table" );
			if( oTable.length > 0 || ( oSEC.length == 0 && oIEC.length == 0 ) || ( oIEC.length == 1 && oIEC[0].type == 'submit' ) )
			{
				continue;
			}
			
			if( oSEC.length == 1 && oIEC.length <= 3 )
			{
				// Check if select 'Null Value' option
				var temp = oSEC[0].options[oSEC[0].selectedIndex].text;						
				if( temp && temp == 'Null Value' )
				{	
					this.__parameter[k].name = this.__isnull;
					if ( oIEC.length > 0 )
						this.__parameter[k].value = oIEC[0].name;
					else
						this.__parameter[k].value = oSEC[0].name;
					k++;
					continue;
				}
							
				// deal with "select" parameter
				if( oIEC.length > 0 )
				{
					this.__parameter[k].name = oIEC[0].name;
				}
				else
				{
					this.__parameter[k].name = oSEC[0].name;
				}				
				this.__parameter[k].value = oSEC[0].options[oSEC[0].selectedIndex].value;				
				k++;
				
				// set display text for the "select" parameter
				if( !this.__parameter[k] )
				{
					this.__parameter[k] = { };
				}
				this.__parameter[k].name = this.__isdisplay + this.__parameter[k-1].name;
				this.__parameter[k].value = oSEC[0].options[oSEC[0].selectedIndex].text;
				k++;
				
				continue;
			}
			
			if( oSEC.length == 0 && ( oIEC.length == 1 || oIEC.length == 2 ) )
			{
				var temp = {};
				var tempDef = null;
				if( oIEC.length == 1 )
				{
					temp = oIEC[0]
				}
				else if( oIEC[0].type == 'hidden' )
				{
					tempDef = oIEC[0]
					temp = oIEC[1];
				}
				else
				{
					continue;
				}
				
				if( temp.type == 'text' || temp.type == 'password' )
				{
					// deal with "text" parameter
					this.__parameter[k].name = temp.name;
					// if the parameter neither has a value nor a default value, error
					if( birtUtility.trim( temp.value ) == '' )
					{
						if( tempDef )
						{
							temp.focus( );
							alert( temp.name + ' cannot be blank' );
							return false;
						}
						else
						{
							this.__parameter[k].value = temp.value;
						}
					}
					else
					{
						this.__parameter[k].value = temp.value;
					}
					k++;
				}
				else if( temp.type == 'checkbox' )
				{
					// deal with checkbox
					this.__parameter[k].name = temp.value;
					temp.checked?this.__parameter[k].value = 'true':this.__parameter[k].value = 'false';  
					k++;
				}
				else if( temp.type == 'radio' )
				{
					// deal with radio
					this.__parameter[k].name = temp.name;
					this.__parameter[k].value = temp.value;
					k++;		
					
					// set display text for the "radio" parameter
					var displayLabel = document.getElementById( temp.id + "_label" );
					if( !displayLabel )
						continue;
						
					if( !this.__parameter[k] )
					{
						this.__parameter[k] = { };
					}
					this.__parameter[k].name = this.__isdisplay + this.__parameter[k-1].name;
					this.__parameter[k].value = displayLabel.innerHTML;
					k++;			
				}
				else if( temp.type == 'hidden' )
				{
					// deal with hidden parameter
					this.__parameter[k].name = temp.name;
					this.__parameter[k].value = temp.value;
					k++;	
				}
			}
			else if( oSEC.length <= 1 && oIEC.length >= 3 )
			{
				for( var j = 0; j < oIEC.length; j++ )
				{
					// deal with radio
					if( oIEC[j].type == 'radio' && oIEC[j].checked )
					{
						if( oIEC[j+1] && ( oIEC[j+1].type == 'text' || oIEC[j+1].type == 'password' ) )
						{
							//Check if allow blank
							var temp = oIEC[j+2];
							if ( temp && temp.id == 'isNotBlank' && temp.value == 'true' )
							{
								if ( birtUtility.trim( oIEC[j+1].value ) == '' )
								{
									oIEC[j+1].focus( );
									alert( temp.name + ' cannot be blank' );
									return false;
								}