mxgraph
Version:
mxGraph is a fully client side JavaScript diagramming library that uses SVG and HTML for rendering.
315 lines (284 loc) • 9.34 kB
JavaScript
/**
* Copyright (c) 2006-2015, JGraph Ltd
* Copyright (c) 2006-2015, Gaudenz Alder
*/
/**
* Class: mxDefaultToolbarCodec
*
* Custom codec for configuring <mxDefaultToolbar>s. This class is created
* and registered dynamically at load time and used implicitly via
* <mxCodec> and the <mxCodecRegistry>. This codec only reads configuration
* data for existing toolbars handlers, it does not encode or create toolbars.
*/
var mxDefaultToolbarCodec = mxCodecRegistry.register(function()
{
var codec = new mxObjectCodec(new mxDefaultToolbar());
/**
* Function: encode
*
* Returns null.
*/
codec.encode = function(enc, obj)
{
return null;
};
/**
* Function: decode
*
* Reads a sequence of the following child nodes
* and attributes:
*
* Child Nodes:
*
* add - Adds a new item to the toolbar. See below for attributes.
* separator - Adds a vertical separator. No attributes.
* hr - Adds a horizontal separator. No attributes.
* br - Adds a linefeed. No attributes.
*
* Attributes:
*
* as - Resource key for the label.
* action - Name of the action to execute in enclosing editor.
* mode - Modename (see below).
* template - Template name for cell insertion.
* style - Optional style to override the template style.
* icon - Icon (relative/absolute URL).
* pressedIcon - Optional icon for pressed state (relative/absolute URL).
* id - Optional ID to be used for the created DOM element.
* toggle - Optional 0 or 1 to disable toggling of the element. Default is
* 1 (true).
*
* The action, mode and template attributes are mutually exclusive. The
* style can only be used with the template attribute. The add node may
* contain another sequence of add nodes with as and action attributes
* to create a combo box in the toolbar. If the icon is specified then
* a list of the child node is expected to have its template attribute
* set and the action is ignored instead.
*
* Nodes with a specified template may define a function to be used for
* inserting the cloned template into the graph. Here is an example of such
* a node:
*
* (code)
* <add as="Swimlane" template="swimlane" icon="images/swimlane.gif"><![CDATA[
* function (editor, cell, evt, targetCell)
* {
* var pt = mxUtils.convertPoint(
* editor.graph.container, mxEvent.getClientX(evt),
* mxEvent.getClientY(evt));
* return editor.addVertex(targetCell, cell, pt.x, pt.y);
* }
* ]]></add>
* (end)
*
* In the above function, editor is the enclosing <mxEditor> instance, cell
* is the clone of the template, evt is the mouse event that represents the
* drop and targetCell is the cell under the mousepointer where the drop
* occurred. The targetCell is retrieved using <mxGraph.getCellAt>.
*
* Futhermore, nodes with the mode attribute may define a function to
* be executed upon selection of the respective toolbar icon. In the
* example below, the default edge style is set when this specific
* connect-mode is activated:
*
* (code)
* <add as="connect" mode="connect"><![CDATA[
* function (editor)
* {
* if (editor.defaultEdge != null)
* {
* editor.defaultEdge.style = 'straightEdge';
* }
* }
* ]]></add>
* (end)
*
* Both functions require <mxDefaultToolbarCodec.allowEval> to be set to true.
*
* Modes:
*
* select - Left mouse button used for rubberband- & cell-selection.
* connect - Allows connecting vertices by inserting new edges.
* pan - Disables selection and switches to panning on the left button.
*
* Example:
*
* To add items to the toolbar:
*
* (code)
* <mxDefaultToolbar as="toolbar">
* <add as="save" action="save" icon="images/save.gif"/>
* <br/><hr/>
* <add as="select" mode="select" icon="images/select.gif"/>
* <add as="connect" mode="connect" icon="images/connect.gif"/>
* </mxDefaultToolbar>
* (end)
*/
codec.decode = function(dec, node, into)
{
if (into != null)
{
var editor = into.editor;
node = node.firstChild;
while (node != null)
{
if (node.nodeType == mxConstants.NODETYPE_ELEMENT)
{
if (!this.processInclude(dec, node, into))
{
if (node.nodeName == 'separator')
{
into.addSeparator();
}
else if (node.nodeName == 'br')
{
into.toolbar.addBreak();
}
else if (node.nodeName == 'hr')
{
into.toolbar.addLine();
}
else if (node.nodeName == 'add')
{
var as = node.getAttribute('as');
as = mxResources.get(as) || as;
var icon = node.getAttribute('icon');
var pressedIcon = node.getAttribute('pressedIcon');
var action = node.getAttribute('action');
var mode = node.getAttribute('mode');
var template = node.getAttribute('template');
var toggle = node.getAttribute('toggle') != '0';
var text = mxUtils.getTextContent(node);
var elt = null;
if (action != null)
{
elt = into.addItem(as, icon, action, pressedIcon);
}
else if (mode != null)
{
var funct = (mxDefaultToolbarCodec.allowEval) ? mxUtils.eval(text) : null;
elt = into.addMode(as, icon, mode, pressedIcon, funct);
}
else if (template != null || (text != null && text.length > 0))
{
var cell = editor.templates[template];
var style = node.getAttribute('style');
if (cell != null && style != null)
{
cell = editor.graph.cloneCell(cell);
cell.setStyle(style);
}
var insertFunction = null;
if (text != null && text.length > 0 && mxDefaultToolbarCodec.allowEval)
{
insertFunction = mxUtils.eval(text);
}
elt = into.addPrototype(as, icon, cell, pressedIcon, insertFunction, toggle);
}
else
{
var children = mxUtils.getChildNodes(node);
if (children.length > 0)
{
if (icon == null)
{
var combo = into.addActionCombo(as);
for (var i=0; i<children.length; i++)
{
var child = children[i];
if (child.nodeName == 'separator')
{
into.addOption(combo, '---');
}
else if (child.nodeName == 'add')
{
var lab = child.getAttribute('as');
var act = child.getAttribute('action');
into.addActionOption(combo, lab, act);
}
}
}
else
{
var select = null;
var create = function()
{
var template = editor.templates[select.value];
if (template != null)
{
var clone = template.clone();
var style = select.options[select.selectedIndex].cellStyle;
if (style != null)
{
clone.setStyle(style);
}
return clone;
}
else
{
mxLog.warn('Template '+template+' not found');
}
return null;
};
var img = into.addPrototype(as, icon, create, null, null, toggle);
select = into.addCombo();
// Selects the toolbar icon if a selection change
// is made in the corresponding combobox.
mxEvent.addListener(select, 'change', function()
{
into.toolbar.selectMode(img, function(evt)
{
var pt = mxUtils.convertPoint(editor.graph.container,
mxEvent.getClientX(evt), mxEvent.getClientY(evt));
return editor.addVertex(null, funct(), pt.x, pt.y);
});
into.toolbar.noReset = false;
});
// Adds the entries to the combobox
for (var i=0; i<children.length; i++)
{
var child = children[i];
if (child.nodeName == 'separator')
{
into.addOption(select, '---');
}
else if (child.nodeName == 'add')
{
var lab = child.getAttribute('as');
var tmp = child.getAttribute('template');
var option = into.addOption(select, lab, tmp || template);
option.cellStyle = child.getAttribute('style');
}
}
}
}
}
// Assigns an ID to the created element to access it later.
if (elt != null)
{
var id = node.getAttribute('id');
if (id != null && id.length > 0)
{
elt.setAttribute('id', id);
}
}
}
}
}
node = node.nextSibling;
}
}
return into;
};
// Returns the codec into the registry
return codec;
}());
/**
* Variable: allowEval
*
* Static global switch that specifies if the use of eval is allowed for
* evaluating text content. Default is true. Set this to false if stylesheets
* may contain user input
*/
mxDefaultToolbarCodec.allowEval = true;
__mxOutput.mxDefaultToolbarCodec = typeof mxDefaultToolbarCodec !== 'undefined' ? mxDefaultToolbarCodec : undefined;