gridcolumn.lzx

<library>
    <include href="button.lzx"/>
    <include href="base/basegridcolumn.lzx"/>   

    <resource name="colResize" src="resources/grid/grid_cursor.swf"/>
    <resource name="lzgridsortarrow_rsrc">
        <frame src="resources/grid/sort_arrow_up.swf"/>
        <frame src="resources/grid/sort_arrow_dn.swf"/>
    </resource>

    <class name="gridcolumn" extends="basegridcolumn">
        <!--- If set to false, the column cannot be resized. -->
        <attribute name="resizable" value="true" type="boolean"/>

        <!--- If true, the column header is clickable and will initiate a 
              sort -->
        <attribute name="sortable" type="boolean" value="true"/>
        <!--- If set to false, then no header will be shown for this column.-->
        <attribute name="showheader" value="true" type="boolean"/>
        <!--- The width of the resizer between columns.-->
        <attribute name="resizemargin" value="3" type="number"/>
        <!--- @keywords private -->
        <attribute name="colwidth" value="${this.width -                                      (this.resizable ? 4 : 2) }"/>

        <!--- @keywords private -->
        <method name="init">
            if ( ! this.hassetwidth ){
                if ( this.showheader ){
                    this.setAttribute('width', mybutton.measureWidth()  );
                } else {
                    this.setAttribute('width', this.minwidth );
                }
            }
            if ( this.showheader ){
                mybutton.widthConstraint.setAttribute('applied', true);
            }
            super.init();
        </method>

        <!--- @keywords private -->
        <method name="_applystyle" args="s">
            if ( showheader ){
                setTint(mybutton.sortarrow, s.textcolor);
                if ( resizable ){
                    setTint(resizer, s.basecolor);
                }
            }
            super._applystyle( s );
        </method>

        <!--- @keywords private -->
        <state applied="${classroot.showheader}" placement="header">
            <button name="mybutton" clip="true" placement="header" text="${classroot.text}" text_padding_x="20" focusable="$once{classroot.sortable}" doesenter="false" onclick="parent.doSort()" clickable="$once{classroot.sortable}">

                <setter name="clickable" args="cl">
                     super.setAttribute ('clickable', cl && this.classroot.sortable );
                </setter>
                    
                <view resource="lzgridsortarrow_rsrc" name="sortarrow" x="${ parent._title.x + parent._title.width + 2}" y="${ parent.titleshift + parent.height/2 - height/2}" frame="${ classroot.ascendsort ? 1 : 2 }" visible="${ classroot.hasSort }"/>

                <state name="widthConstraint" placement="header">
                    <attribute name="width" value="${ classroot.width -                                           ( parent.resizable && parent['resizer'] ?                                             parent['resizer'].width : 0 ) }"/>
                </state>
            </button>

            <state placement="header" applied="${parent.resizable}">
                <view height="${parent.height-1}" x="${parent.mybutton.width - 1}" placement="header" name="resizer" clickable="$once{parent.resizable}" cursor="colResize" onmousedown="lz.Cursor.lock();parent.rs.setAttribute('applied', true)" onmouseup="lz.Cursor.unlock();parent.rs.setAttribute('applied', false)">
                    <view resource="resources/grid/column_resize_top.swf"/>
                    <view resource="resources/grid/column_resize_mid.swf" stretches="height"/>
                    <view resource="resources/grid/column_resize_bot.swf"/>
                    <stableborderlayout axis="y"/>
                </view>
            </state>

            <state name="rs" placement="header">
                <attribute name="__resize_xroffset" value="$once{ this.x - this.width +                                           this.getMouse( 'x' ) }"/>
                    
                <attribute name="width" value="${Math.max( minwidth, this.immediateparent.getMouse( 'x' )- __resize_xroffset)}"/>
            </state>
        </state>


        <doc>
          <tag name="shortdesc"><text>
              Declares a column in a grid.
          </text></tag>
          <text>
            <p>
              The <classname>gridcolumn</classname> class can be used to declare a
              column in a <classname>grid</classname> with the standard column
              header look without specifying exactly what goes inside the
              column. This can be useful for embedding other components within a
              grid.</p>

            <example>
              <canvas height="160">
              <dataset name="contacts" request="true"
              src="http:resources/contactsdata.xml"/>

              <grid datapath="contacts:/resultset">
              <gridcolumn showheader="false" width="50">
              <view bgcolor="#CCCCCC" width="${parent.width}"
              placement="header"
              height="${parent.immediateparent.height-1}"/>
              <text datapath="position()"/>
              </gridcolumn>
              <gridcolumn width="200"> Name
              <text datapath="@displayname" resize="false"/>
              </gridcolumn>
              <gridcolumn sortable="false"> Home
              <checkbox value="$path{'@home_default'}"
              xoffset="${10-parent.width/2}">
              <handler name="onvalue">
              this.datapath.updateData();
              </handler>
              </checkbox>
              </gridcolumn>
              </grid>
              </canvas>
            </example>
          </text>
        </doc>
    </class>
</library>
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<!-- @LZX_VERSION@                                                         -->