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/* ************************************************************************
qooxdoo - the new era of web development
http://qooxdoo.org
Copyright:
2007 Derrell Lipman
License:
LGPL: http://www.gnu.org/licenses/lgpl.html
EPL: http://www.eclipse.org/org/documents/epl-v10.php
See the LICENSE file in the project's top-level directory for details.
Authors:
* Derrell Lipman (derrell)
************************************************************************ */
/* ************************************************************************
#module(treevirtual)
#embed(qx.icontheme/16/status/folder-open.png)
#embed(qx.icontheme/16/places/folder.png)
#embed(qx.icontheme/16/actions/document-open.png)
#embed(qx.icontheme/16/actions/document-new.png)
#embed(qx.widgettheme/tree/*)
#embed(qx.static/blank.gif)
************************************************************************ */
/**
* A data cell renderer for the tree column of a simple tree
*/
qx.OO.defineClass("qx.ui.treevirtual.SimpleTreeDataCellRenderer",
qx.ui.table.AbstractDataCellRenderer,
function()
{
qx.ui.table.AbstractDataCellRenderer.call(this);
// Base URL used for indent images
var Am = qx.manager.object.AliasManager;
this.WIDGET_TREE_URI = Am.getInstance().resolvePath("widget/tree/");
this.STATIC_IMAGE_URI = Am.getInstance().resolvePath("static/image/")
});
/**
* Set whether lines linking tree children shall be drawn on the tree.
*/
qx.OO.addProperty({
name : "useTreeLines",
type : "boolean",
defaultValue : true,
getAlias : "useTreeLines"
});
/*
* When true, exclude only the first-level tree lines, creating, effectively,
* multiple unrelated root nodes.
*/
qx.OO.addProperty({
name : "excludeFirstLevelTreeLines",
type : "boolean",
defaultValue : false
});
/**
* Set whether the open/close button should be displayed on a branch, even if
* the branch has no children.
*/
qx.OO.addProperty({
name : "alwaysShowOpenCloseSymbol",
type : "boolean",
defaultValue : false
});
// overridden
qx.Proto._getCellStyle = function(cellInfo)
{
var node = cellInfo.value;
// Return the style for the div for the cell. If there's cell-specific
// style information provided, append it.
var html =
cellInfo.style +
qx.ui.treevirtual.SimpleTreeDataCellRenderer.MAIN_DIV_STYLE +
(node.cellStyle ? node.cellStyle + ";" : "");
return html;
};
// overridden
qx.Proto._getContentHtml = function(cellInfo)
{
var html = "";
var node = cellInfo.value;
var imageUrl;
var _this = this;
var Stdcr = qx.ui.treevirtual.SimpleTreeDataCellRenderer;
function addImage(urlAndToolTip)
{
var html = Stdcr.IMG_START;
var Am = qx.manager.object.AliasManager;
if (qx.core.Client.getInstance().isMshtml() &&
/\.png$/i.test(urlAndToolTip.url))
{
html +=
this.STATIC_IMAGE_URI + "blank.gif" +
'" style="filter:' +
"progid:DXImageTransform.Microsoft.AlphaImageLoader(" +
" src='" + urlAndToolTip.url + "',sizingMethod='scale')";
}
else
{
var imageUrl = Am.getInstance().resolvePath(urlAndToolTip.url);
html += imageUrl + '" style="';
}
if (urlAndToolTip.imageWidth && urlAndToolTip.imageHeight)
{
html +=
';width:' + urlAndToolTip.imageWidth + 'px' +
';height:' + urlAndToolTip.imageHeight + 'px';
}
var tooltip = urlAndToolTip.tooltip;
if (tooltip != null)
{
html += Stdcr.IMG_TITLE_START + tooltip;
}
html += Stdcr.IMG_END;
return html;
}
// Generate the indentation. Obtain icon determination values once rather
// than each time through the loop.
var bUseTreeLines = this.getUseTreeLines();
var bExcludeFirstLevelTreeLines = this.getExcludeFirstLevelTreeLines();
var bAlwaysShowOpenCloseSymbol = this.getAlwaysShowOpenCloseSymbol();
for (var i = 0; i < node.level; i++)
{
imageUrl = this._getIndentSymbol(i,
node,
bUseTreeLines,
bAlwaysShowOpenCloseSymbol,
bExcludeFirstLevelTreeLines);
html += addImage({
url : imageUrl,
imageWidth : 19,
imageHeight : 16
});
}
// Add the node's icon
imageUrl = (node.bSelected ? node.iconSelected : node.icon);
if (! imageUrl)
{
if (node.type == qx.ui.treevirtual.SimpleTreeDataModel.Type.LEAF)
{
imageUrl = (node.bSelected
? "icon/16/actions/document-open.png"
: "icon/16/actions/document-new.png");
}
else
{
imageUrl = (node.bSelected
? "icon/16/status/folder-open.png"
: "icon/16/places/folder.png");
}
}
html += addImage({ url:imageUrl });
// Add the node's label. We calculate the "left" property with: each tree
// line (indentation) icon is 19 pixels wide; the folder icon is 16 pixels
// wide, there are two pixels of padding at the left, and we want 2 pixels
// between the folder icon and the label
html +=
'<div style="position:absolute;' +
'left:' + ((node.level * 19) + 16 + 2 + 2) + ';' +
'top:0' +
(node.labelStyle ? ";" + node.labelStyle : "") +
';">' +
node.label +
'</div>';
return html;
};
/**
* Determine the symbol to use for indentation of a tree row, at a particular
* column. The indentation to use may be just white space or may be a tree
* line. Tree lines come in numerous varieties, so the appropriate one is
* selected.
*
* @param column {Integer}
* The column of indentation being requested, zero-relative
*
* @param node
* The node being displayed in the row. The properties of a node are
* described in {@link qx.ui.treevirtual.SimpleTreeDataModel}
*
* @param bUseTreeLines {Boolean}
* Whether to find an appropriate tree line icon, or simply provide white
* space.
*
* @param bAlwaysShowOpenCloseSymbol {Boolean}
* Whether to display the open/close icon for a node even if it has no
* children.
*
* @param bExcludeFirstLevelTreeLines {Boolean}
* If bUseTreeLines is enabled, then further filtering of the left-most tree
* line may be specified here. If <i>true</i> then the left-most tree line,
* between top-level siblings, will not be displayed. If <i>false</i>, then
* the left-most tree line wiill be displayed just like all of the other
* tree lines.
*/
qx.Proto._getIndentSymbol = function(column,
node,
bUseTreeLines,
bAlwaysShowOpenCloseSymbol,
bExcludeFirstLevelTreeLines)
{
// If we're in column 0 and excludeFirstLevelTreeLines is enabled, then
// we treat this as if no tree lines were requested.
if (column == 0 && bExcludeFirstLevelTreeLines)
{
bUseTreeLines = false;
}
// If we're not on the final column...
if (column < node.level - 1)
{
// then return either a line or a blank icon, depending on bUseTreeLines
return (bUseTreeLines && ! node.lastChild[column]
? this.WIDGET_TREE_URI + "line.gif"
: this.STATIC_IMAGE_URI + "blank.gif");
}
var bLastChild = node.lastChild[node.lastChild.length - 1];
// Is this a branch node that does not have the open/close button hidden?
if (node.type == qx.ui.treevirtual.SimpleTreeDataModel.Type.BRANCH &&
! node.bHideOpenClose)
{
// Yup. Determine if this node has any children
var child = null;
for (child in node.children)
{
// If we find even one, we're done here.
break;
}
// Does this node have any children, or do we always want the open/close
// symbol to be shown?
if (child !== null || bAlwaysShowOpenCloseSymbol)
{
// If we're not showing tree lines...
if (! bUseTreeLines)
{
// ... then just use a plus or minus
return (node.bOpened
? this.WIDGET_TREE_URI + "minus.gif"
: this.WIDGET_TREE_URI + "plus.gif");
}
// Are we looking at a top-level, first child of its parent?
if (column == 0 && node.bFirstChild)
{
// Yup. If it's also a last child...
if (bLastChild)
{
// ... then use no tree lines.
return (node.bOpened
? this.WIDGET_TREE_URI + "only_minus.gif"
: this.WIDGET_TREE_URI + "only_plus.gif");
}
else
{
// otherwise, use descender lines but no ascender.
return (node.bOpened
? this.WIDGET_TREE_URI + "start_minus.gif"
: this.WIDGET_TREE_URI + "start_plus.gif");
}
}
// It's not a top-level, first child. Is this the last child of its
// parent?
if (bLastChild)
{
// Yup. Return an ending plus or minus, or blank if node.bOpened so
// indicates.
return (node.bOpened
? this.WIDGET_TREE_URI + "end_minus.gif"
: this.WIDGET_TREE_URI + "end_plus.gif");
}
// Otherwise, return a crossing plus or minus, or a blank if
// node.bOpened so indicates.
return (node.bOpened
? this.WIDGET_TREE_URI + "cross_minus.gif"
: this.WIDGET_TREE_URI + "cross_plus.gif");
}
}
// This node does not have any children. Return an end or cross, if we're
// using tree lines.
if (bUseTreeLines)
{
// If this is a last child, return and ending line; otherwise cross.
return (bLastChild
? this.WIDGET_TREE_URI + "end.gif"
: this.WIDGET_TREE_URI + "cross.gif");
}
return this.STATIC_IMAGE_URI + "blank.gif";
};
qx.Class.MAIN_DIV_STYLE =
';overflow:hidden;white-space:nowrap;border-right:1px solid #eeeeee;' +
'padding-left:2px;padding-right:2px;cursor:default' +
(qx.core.Client.getInstance().isMshtml() ? '' : ';-moz-user-select:none;');
qx.Class.IMG_START = '<img src="';
qx.Class.IMG_END = '"/>';
qx.Class.IMG_TITLE_START = '" title="';
|