<?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.
  
-->
<!-- X_LZ_COPYRIGHT_BEGIN ************************************************
* Copyright 2006, 2009 Laszlo Systems, Inc.  All Rights Reserved.              *
* Use is subject to license terms.                                       *
* X_LZ_COPYRIGHT_END ************************************************** -->
<!--
    vertical slider contributed by Sebastian Wagner
-->
<library>
  
  <class name="vslidertrack" extends="view" bgcolor="0x000000">
        <view width="${ parent.width-2}" height="${ parent.height-2 }" 
          x="1" y="1" bgcolor="0xFFFFFF"/>
        <view width="${ parent.width-2}" bgcolor="0xCCCCCC"
          x="1" y="${ (this.parent.parent.switchaxis) ? 
                parent.parent._sliderthumb.y : 1 }" 
          visible="${ parent.parent.showrange }" 
          height="${ (this.parent.parent.switchaxis) ? 
        (parent.parent._vslidertrack.height - parent.parent._sliderthumb.y-1) : 
        parent.parent._sliderthumb.y }" />
  </class>
  
  <class name="vsliderthumb" extends="button" bgcolor="0x999999" 
        height="10" width="20" 
    onmousedown="dragger.setAttribute('applied', true)" onmouseup="dragger.setAttribute('applied', false)">
        <attribute name="drag_min" value="0" type="number" />
        <attribute name="showvalue" type="boolean" value="true" />
        <attribute name="drag_max" value="0" type="number" />
        <handler name="oninit">
                //Setting the initVal
                this.setAttribute('y', getPosFromValue(this.parent.initvalue));
        </handler>
        
        <method name="getValueFromPos">
                var delta1 = this.parent.maxvalue-this.parent.minvalue;
                var perc = (this.parent.switchaxis) ? 1-(y / (this.parent.height-this.height)) : (y / (this.parent.height-this.height));
                //Debug.write(delta1,perc);
                return (Math.round(perc*delta1))+this.parent.minvalue;
        </method>
        
        <method name="getPosFromValue" args="val">
                var perc = (val-this.parent.minvalue) / (this.parent.maxvalue-this.parent.minvalue);
                //Debug.write(perc);
                var valY = (this.parent.switchaxis) ? ( (1-perc) * (this.parent.height-this.height)) : (perc * (this.parent.height-this.height));
                //Debug.write("valY: ",Math.round(valY));
                return Math.round(valY);
        </method>
        
        <setter name="y" args="v">
                super.setAttribute('y', v);
                var thumbVal = getValueFromPos();
                if (thumbVal != parent.value) {
                        this.parent.setValue(thumbVal);
                }               
        </setter>
    <dragstate name="dragger" drag_axis="y"
        drag_min_y="${ this.drag_min }"  
        drag_max_y="${ this.drag_max }">
            <text name="t1" x="-24" text="${ this.parent.parent.value }" y="-4" resize="true" />
    </dragstate>
  </class>

  <class name="vslider" extends="view" >
        <!--- Minimum Value -->
        <attribute name="minvalue" type="number" value="0"/>
        
        <!--- Maximum Value -->
        <attribute name="maxvalue" type="number" value="100"/>
        
        <!--- Showrange should the slidertrack be with color while 'sliding' -->
        <attribute name="showrange" type="boolean" value="true"/>
        
        <!--- showvalue should the slider show the numbers of min/max -->
        <attribute name="showvalue" type="boolean" value="true"/>
        
        <!--- switchaxis true means minimum-value is 
                t op maximum is bottom false turns around -->
        <attribute name="switchaxis" type="boolean" value="false"/>
        
        <!-- Initial Value -->
        <attribute name="initvalue" value="0" type="number" />          
        
    <!--- @keywords private -->
    <event name="onvalue"/>
        
    <!--- @keywords private -->
    <attribute name="value" value="0" setter="setValue(value)"/>
    <method name="setValue" args="v">
        if (!isinited) {
          this.value = v;
          return;
        }
        if (this.value == v) return;
        this.value = v;
        if (onvalue) onvalue.sendEvent(v);
    </method>
       
        <vslidertrack name="_vslidertrack" x="5" 
        width="10" height="${ parent.height }" />
        <vsliderthumb name="_sliderthumb" 
        drag_max="${ parent.height-this.height }" 
        showvalue="${ parent.showvalue }" />
        
        <text text="${ ( (this.parent.switchaxis) ? 
                this.parent.maxvalue : this.parent.minvalue ) }" 
        visible="${ parent.showvalue }" 
        y="-8" x="${ this.parent._vslidertrack.width+10 }" />
        
        <text text="${ ( (this.parent.switchaxis) ? 
                this.parent.minvalue : this.parent.maxvalue ) }" 
          visible="${ parent.showvalue }" 
          y="${ this.parent.height-10 }" 
          x="${ this.parent._vslidertrack.width+10 }" />
  </class>
  
  

</library>