<?xml version="1.0" encoding="UTF-8" ?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
    	  
  Unless required by applicable law or agreed to in writing,
  software distributed under the License is distributed on an
  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, either express or implied.  See the License for the
  specific language governing permissions and limitations
  under the License.
  
-->
<!---
    @access public
    @topic Components
    @subtopic Charts
  -->
<library>

    <!---
     simple legend class
     @access public
      -->
    <class name="omlegend" extends="drawview" >
        <!--- @keyword private -->
        <attribute name="topmargin" type="number" value="0"/>
        <!--- @keyword private -->
        <attribute name="bottommargin" type="number" value="0"/>
        <!--- @keyword private -->
        <attribute name="leftmargin" type="number" value="0"/>
        <!--- @keyword private -->
        <attribute name="rightmargin" type="number" value="0"/>
        <!--- @keyword private -->
        <attribute name="verticalgap" type="number" value="1"/>
        <!--- Indicates if legend box will have a border, default: true -->
        <attribute name="legendborder" type="boolean" value="true"/>
        <!--- Allow to set the line width from the legend tag -->
        <attribute name="borderWidth" type="number" value="1"/>
        <!--- Allow to set the color line from the legend tag -->
        <attribute name="borderColor" type="color" value="0x000000"/>
        <!--- Allow to set the fill color from the legend tag -->
        <attribute name="fillColor" type="color" value="0xFFFFFF"/>
        <!--- Indicates how the legend items will be displayed, default: vertical -->
        <attribute name="direction" type="string" value="vertical"/>     
        <!--- Indicates the style will be applied tho the border legend box -->
        <attribute name="styleBorder" type="string" value="null"/>
        <!--- Indicates the Font will be used in the legend item text -->
        <attribute name="legendFont" type="string" value="serif"/>
        <!--- Indicates the Font size wiil be used in the legend item text, default: 10px -->
        <attribute name="legendFontsize" type="size" value="6"/>
        <!--- Indicates the Font color wiil be used in the legend item text, default: black -->
        <attribute name="legendFontcolor" type="color" value="0x000000"/>
        <!--- Indicates where the legend box will be positioned, default: right -->
        <attribute name="position" type="string" value="right"/>

        <!--- Takes the relationship with the chart -->
        <attribute name="chart" type="expression" value="${null}"/>
        <attribute name="chartClassName" type="string" value="${null}"/>

        <simplelayout axis="y"/>
        
                
       <!--- @keywords private
        <handler name="oninitdone" reference="this.chart">
            if(chart.initdone)
            {
                var lChart = this.getChartInstance();
                if( lChart != null ) {
                    this.chartClassName = lChart.constructor.tagname;
                    this.datapath.setFromPointer(lChart.getDataSeries().getLegend());
                }   
            }
        </handler>
         -->
         
        <handler name="oninit">
        	<![CDATA[
        	    var tObject = parent.getOMDataSeries();
        	    this.chart = parent;
        	    
        	    for (var i=0;i<tObject.tooltipseries.length;i++) {
        	    	
        	    	new lz.omlegenditem(this.viewlegendbox,{tBox:tObject.tooltipseries[i]});
        	    	
        	    }
        	    
        	    //this.bringToFront();
        	    this.border();
        	]]>
        </handler> 
        
        <!-- Top Margin -->
        <view height="${parent.topmargin}" />
        <!-- Legend box -->
        <view name="viewlegendbox">    
            <simplelayout spacing="${parent.parent.verticalgap}"/>       
            <method name="init">
                <![CDATA[
    
                    super.init();
                    if ( parent.direction == 'horizontal'){
                        this.layouts[0].setAttribute('axis', 'x');
                    } else {
                        this.layouts[0].setAttribute('axis', 'y');
                    }
                   
                ]]>
            </method>    
                  
        </view>
        <!-- Bottom Margin -->
        <view height="${parent.bottommargin}"/>        


        <!--- @keywords private -->
        <method name="border">
            var lStartX = Math.ceil(this.lineWidth/2);
            var lStartY = Math.ceil(this.lineWidth/2);
            var lOrgWidth = this.width;
            var lOrgHeight = this.height;

            this.lineWidth = this.borderWidth;
            this.strokeStyle = this.borderColor;
            this.fillStyle = this.fillColor;

            this.beginPath();
            this.moveTo(lStartX, lStartY);
            this.lineTo(this.width, lStartY);
            this.lineTo(this.width, this.height);
            this.lineTo(lStartY, this.height);
            this.lineTo(lStartX, lStartY);
            this.closePath();
            this.stroke();
            this.fill();

            // Restores the original dimensions of the legend, due to the changes
            // that the lineTo()'s calls perform over the legendbox dimensions.
            this.setAttribute( "width", lOrgWidth );
            this.setAttribute( "height", lOrgHeight );
        </method>

        <!--- @keywords private -->
        <method name="getChartInstance">
        <![CDATA[
            return this.chart;
        ]]>
        </method>

        <!--- event that allows custom action for mouse over event
            @param Number item: The identifier legend item
         -->
        <event name="onitemmouseover" />
        <!--- event that allows custom action for mouse out event
            @param Number item: The identifier legend item
         -->
        <event name="onitemmouseout" />
        <!--- event that allows custom action for mouse down event
            @param Number item: The identifier legend item
         -->
        <event name="onitemmousedown" />
        <!--- event that allows custom action for mouse up event
            @param Number item: The identifier legend item
         -->
        <event name="onitemmouseup" />
        <!--- event that allows custom action for mouse click event
            @param Number item: The identifier legend item
         -->
        <event name="onitemmouseclick" />
        
    </class>
    
    <!--- @keyword private
    individual legend item -->
    <class name="omlegenditem" >
        <attribute name="identifier" type="number" value="0"/>
        <attribute name="tBox" type="string" value=""/>
        <attribute name="linevisible" type="boolean" value="false"/>
        <simplelayout axis="x" spacing="$once{parent.parent.parent.verticalgap}"/>
        <view name="leftmarginview" width="$once{parent.parent.parent.leftmargin}" />
        <marker name="legendmarker"></marker>    
        <text name="legendtext" resize="true" text="$once{ parent.tBox }" 
        	  fontsize="$once{parent.parent.parent.legendFontsize}"
              fgcolor="$once{parent.parent.parent.legendFontcolor}"
              height="$once{parent.parent.parent.legendFontsize+6}">
        </text>
        <view name="rightmarginview" width="${parent.parent.parent.rightmargin}"/>
        <method name="init">
            <![CDATA[
                super.init();

                var colors = new Array(0);
                var imagesPath = new Array(0);
                var legenditems = parent.subviews;
                var legendmarkeritem;

                if( parent.parent.chartClassName == "piechart" ) {
                    var arrPieces = parent.parent.getChartInstance().plotarea.arrPiePieces;
                    var piePiece;

                    for(var i = 0; i < arrPieces.length; i++){ 
                        piePiece = arrPieces[i];  
                        colors[i] = piePiece.style.region.color;
                        
                        if ( legenditems[i] != null ){                
                            legendmarkeritem = legenditems[i].legendmarker;
                            legendmarkeritem.setAttribute('width', piePiece.style.point.width);
                            legendmarkeritem.setAttribute('height', piePiece.style.point.height);
                        }
                    }
                } else {
                    var topseries = parent.parent.getChartInstance().getDataSeries();
                    var numSeries = topseries.getNumDataSeries();
                    for(var i = 0; i < numSeries; i++){ 
                        var ldatastyle = parent.parent.getChartInstance().style.getDataStyle(i);
                        if ( parent.parent.chartClassName == "linechart" )
                            colors[i] = ldatastyle.line.color;
                        else
                            if ( ldatastyle.region.image != null ){
                                imagesPath[i] = ldatastyle.region.image;
                            } else {
                                colors[i] = ldatastyle.region.color;
                            }
                        if ( legenditems[i] != null ){                
                            legendmarkeritem = legenditems[i].legendmarker;
                            legendmarkeritem.setAttribute('width', ldatastyle.point.width);
                            legendmarkeritem.setAttribute('height', ldatastyle.point.height);
                        }
                    }
                }

                for(var i = 0; i < legenditems.length; i++){
                    var legenditem = legenditems[i];
                    legendmarkeritem = legenditem.legendmarker;
                    if ( imagesPath[i] != null ){
                        legendmarkeritem.setSource(imagesPath[i]);
                        legendmarkeritem.setAttribute('opacity', ldatastyle.region.opacity);
                        legendmarkeritem.setAttribute( "visible", true );
                    }
                    else
                        legendmarkeritem.setAttribute('bgcolor', colors[i]);
                    this.setAttribute('identifier', i);
                }
            ]]>
        </method>
        <!--- calls the method that implements the acton
            @keyword private-->
        <handler name="onmouseover">
        	this.legendtext.setAttribute("fontstyle","bold");
            parent.classroot.onitemmouseover.sendEvent(this);
        </handler>
        <!--- calls the method that implements the acton
            @keyword private-->
        <handler name="onmouseout">
        	this.legendtext.setAttribute("fontstyle","plain");
            parent.classroot.onitemmouseout.sendEvent(this);
        </handler>
        <!--- calls the method that implements the acton
            @keyword private-->
        <handler name="onmousedown">
            parent.classroot.onitemmousedown.sendEvent(this);
        </handler>
        <!--- calls the method that implements the acton
            @keyword private-->
        <handler name="onmouseup">
            parent.classroot.onitemmouseup.sendEvent(this);
        </handler>
        <!--- calls the method that implements the acton
            @keyword private-->
        <handler name="onclick">
            parent.classroot.onitemmouseclick.sendEvent(this);
        </handler>
    </class>

</library>