update.js
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/**
* Update plugin. Use updateUrl and updateInterval (optional, default is 60000ms)
* in the meta data of the diagram to configure the plugin. (Alternatively, the
* update-url and update-interval URL parameters may be used instead.)
*
* It will send the XML of the current page to the given URL as a POST request
* (with a parameter called xml) and allows for the following type of XML response
* (with CORS headers):
*
* <updates>
* <update ...>
* <model>...</model>
* <view ...>
* <fit ...>
* </updates>
*
* The outermost updates node may contain an optional url and interval property
* to change the current updateUrl and updateInterval.
*
* Where update must contain an id attribute to reference the cell in the diagram.
*
* - An optional value attribute that contains XML markup is used as the value for
* the cell, with label and tooltip for the label and tooltip, respectively.
* Additionally, placeholders="1" can be used to enable placeholders in the label
* or tooltip of the cell.
*
* Example: <object label="Hello, %var1%!" var1="World" tooltip=
* "Click <a href=\"https://www.draw.io\">here</a>" placeholders="1">
*
* - An optional replace-value attribute that contains 1 can be specified to
* replace the value of the cell. Default is to add the attributes of the XML
* value specified above to the existing value of the cell. (Attributes with
* an empty string value are removed.)
*
* - An optional style attribute that contains the cell style is used to replace
* the existing cell style.
*
* Example: fillColor=red;gradientColor=white;"
*
* - An optional icon attribute that contains JSON is used to add an icon to the
* given cell. The object value that the icon attribute is parsed and may contain
* a tooltip (string), align ("left"|"center"|"right", default is "right"), valign
* (top|middle|bottom, default is bottom) and append (true|false, default is false)
* for adding or replacing existing icons. The image attribute is an object value
* with src, width and height for defining the icon to be displayed (default is
* mxGraph.warningImage). An empty string for the attribute removes all icons.
*
* Example: JSON.stringify({tooltip: 'Locked', append: true, image:
* {src: IMAGE_PATH + '/locked.png', width: 26, height:26}}
*
* - An optional geometry attribute that contains a JSON mxGeometry object can be used
* to replace the current geometry of the refenced cell. In addition to the existing
* field names in mxGeometry, dx and dy can be used to define a vector for moving the
* shape, and dh and dw can be used to resize the cell.
*
* Example: JSON.stringify({dx: (Math.random() * 100) - 50, dh: (Math.random() * 100) - 50}))
*
* - Additionally a model node may be specified to set the current graph model.
*
* Example: <model><mxGraphModel><root><mxCell id="0"/></mxCell>...</root></mxGraphModel></model>
*
* - A view node may be specified with a scale, dx and dy attribute to change the current
* scale and translate.
*
* Example: <view scale="0.5" dx="100" dy="100"/>
*
* - A fit node may be specified with a max-scale property to fit the diagram to the
* available viewport with the specified max-scale.
*/
Draw.loadPlugin(function(editorUi)
{
if (editorUi.editor.isChromelessView())
{
var graph = editorUi.editor.graph;
var updateInterval = parseInt(urlParams['update-interval'] || 60000);
var updateUrlParam = urlParams['update-url'];
var updateUrl = null;
if (updateUrlParam != null)
{
updateUrl = decodeURIComponent(updateUrlParam);
// Creates empty file if update URL is in URL parameter
if (editorUi.createFile != null && editorUi.getCurrentFile() == null)
{
editorUi.createFile(editorUi.defaultFilename, null, null, null, null, null, null, true);
}
}
function createOverlay(desc)
{
var overlay = new mxCellOverlay(desc.image || graph.warningImage,
desc.tooltip, desc.align, desc.valign, desc.offset);
// Installs a handler for clicks on the overlay
overlay.addListener(mxEvent.CLICK, function(sender, evt)
{
editorUi.alert(desc.tooltip);
});
return overlay;
};
function parseResponse(xml)
{
var doc = editorUi.updateDiagram(xml);
var node = (doc != null) ? doc.documentElement : null;
if (node != null && node.nodeName == 'updates')
{
if (node.hasAttribute('url'))
{
updateUrl = node.getAttribute('url');
}
if (node.hasAttribute('interval'))
{
updateInterval = node.getAttribute('interval');
}
}
};
var currentThread = null;
function scheduleUpdates()
{
var page = editorUi.currentPage;
var root = editorUi.editor.graph.getModel().getRoot();
var result = false;
if (urlParams['update-url'] || (root.value != null && typeof(root.value) == 'object'))
{
if (root.value != null && typeof(root.value) == 'object')
{
updateInterval = parseInt(root.value.getAttribute('updateInterval') || updateInterval);
updateUrl = root.value.getAttribute('updateUrl') || updateUrl;
}
if (updateUrl != null)
{
var currentXml = mxUtils.getXml(editorUi.editor.getGraphXml());
function doUpdate()
{
if (updateUrl === 'demo')
{
parseResponse(mxUtils.getXml(createDemoResponse().documentElement));
schedule();
}
else
{
mxUtils.post(updateUrl, 'xml=' + encodeURIComponent(currentXml), function(req)
{
if (page === editorUi.currentPage)
{
if (req.getStatus() >= 200 && req.getStatus() <= 300)
{
parseResponse(mxUtils.getXml(req.getDocumentElement()));
schedule();
}
else
{
editorUi.handleError({message: mxResources.get('error') + ' ' +
req.getStatus()});
}
}
}, function(err)
{
editorUi.handleError(err);
});
}
};
function schedule()
{
currentThread = window.setTimeout(doUpdate, updateInterval);
};
doUpdate();
result = true;
}
}
return result;
};
function startUpdates()
{
var result = scheduleUpdates();
if (result)
{
editorUi.editor.addListener('pageSelected', function()
{
window.clearTimeout(currentThread);
scheduleUpdates();
});
}
return result;
};
function createDemoResponse()
{
var doc = mxUtils.createXmlDocument();
var status = doc.createElement('updates');
for (var id in graph.model.cells)
{
var cell = graph.model.cells[id];
if (graph.model.isEdge(cell))
{
// Ignores short edges
var state = graph.view.getState(cell);
if (Math.random() > 0.5 && state != null && state.length > 50)
{
var update = doc.createElement('update');
update.setAttribute('id', cell.id);
update.setAttribute('value', '<object label="%load% minutes" load="' +
Math.round(Math.random() * 100) + '" placeholders="1">');
update.setAttribute('style', cell.style + ';strokeColor=red;strokeWidth=' +
Math.round(Math.random() * 5) + ';');
status.appendChild(update);
}
else
{
var update = doc.createElement('update');
update.setAttribute('id', cell.id);
update.setAttribute('value', '<object label="" load="' +
Math.round(Math.random() * 100) + '" placeholders="1">');
update.setAttribute('style', cell.style + ';strokeColor=black;strokeWidth=;');
status.appendChild(update);
}
}
else if (graph.model.isVertex(cell))
{
// For the purpose of the demo we flag stuff to update with update="1".
// This is not needed for the general case.
if (cell.value != null && typeof(cell.value) == 'object' &&
cell.value.getAttribute('update') == '1')
{
// Restores original style in demo roundtrip
if (cell.prevStyle == null)
{
cell.prevStyle = cell.style;
}
if (Math.random() > 0.5)
{
var update = doc.createElement('update');
update.setAttribute('id', cell.id);
update.setAttribute('value', '<object tooltip="%load%% Done" load="' +
Math.round(Math.random() * 100) + '" placeholders="1">');
update.setAttribute('style', cell.prevStyle + ';fillColor=red;gradientColor=white;');
update.setAttribute('icon', JSON.stringify({tooltip: 'Alert', align: 'right',
valign: 'top', image: {src: 'https://www.draw.io/mxgraph/images/warning.gif', width: 26, height: 26}}));
// update.setAttribute('geometry', JSON.stringify({dx: (Math.random() * 100) - 50,
// y: cell.geometry.y + (Math.random() * 100) - 50, dh: (Math.random() * 100) - 50}));
status.appendChild(update);
// Adds another icon
if (Math.random() > 0.5)
{
var update = doc.createElement('update');
update.setAttribute('id', cell.id);
update.setAttribute('icon', JSON.stringify({tooltip: 'Busy', append: true,
image: {src: IMAGE_PATH + '/spin.gif', width: 26, height:26}}));
status.appendChild(update);
}
}
else
{
var update = doc.createElement('update');
update.setAttribute('id', cell.id);
update.setAttribute('style', cell.prevStyle + ';fillColor=#d4e1f5;gradientColor=white;');
update.setAttribute('value',
'<object tooltip="Click <a href=\"https://www.draw.io\">here</a>">');
update.setAttribute('icon', '');
status.appendChild(update);
}
}
}
}
// var modelNode = mxUtils.parseXml('<model><mxGraphModel> <root> <mxCell id="0"/> <mxCell id="1" parent="0"/> <mxCell id="12" value="Program" style="rounded=0;shadow=0;strokeWidth=1;fontSize=12;fillColor=#F0F0F0;" vertex="1" parent="1"> <mxGeometry x="274" y="227" width="100" height="40" as="geometry"/> </mxCell> <mxCell id="13" value="PDF
Outline" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="80" y="247" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="14" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="13" target="12" parent="1"> <mxGeometry relative="1" as="geometry"/> </mxCell> <mxCell id="15" value="HTML
Outline" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="118" y="140" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="16" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="15" target="12" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="267" y="158.2814070351758" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="17" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="18" target="12" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="413.7317073170732" y="171" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="18" value="Name" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="274" y="100" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="19" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="20" target="12" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="464.5244755244755" y="227" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="20" value="Description" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="437" y="124" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="21" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="22" target="12" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="436.80419580419584" y="319" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="22" value="Admission
Deadline" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="495" y="216" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="23" value="courses" style="rhombus;whiteSpace=wrap;html=1;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="284" y="349" width="80" height="50" as="geometry"/> </mxCell> <mxCell id="24" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="23" target="12" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="495.26224188188667" y="238.15603653581252" as="sourcePoint"/> <mxPoint x="374" y="244.4537037037037" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="25" value="Course" style="rounded=0;shadow=0;strokeWidth=1;fontSize=12;fillColor=#F0F0F0;" vertex="1" parent="1"> <mxGeometry x="274" y="458" width="100" height="40" as="geometry"/> </mxCell> <mxCell id="26" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="23" target="25" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="324" y="349" as="sourcePoint"/> <mxPoint x="324" y="267" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="27" value="Course
Number" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="80" y="418" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="28" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="27" target="25" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="271.91489361702133" y="652" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="29" value="Subject" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="80" y="514" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="30" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="29" target="25" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="274" y="563.9497487437186" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="31" value="PDF
Outline" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="163" y="587" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="32" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="31" target="25" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="364" y="584.070351758794" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="33" value="HTML
Outline" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="279" y="626" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="34" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="33" target="25" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="401.97468354430384" y="537" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="35" value="Description" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="420" y="567" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="36" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="35" target="25" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="465" y="456" as="targetPoint"/> </mxGeometry> </mxCell> <mxCell id="37" value="Name" style="ellipse;rounded=0;shadow=0;strokeWidth=1;fillColor=none;fontSize=12;" vertex="1" parent="1"> <mxGeometry x="495" y="458" width="90" height="40" as="geometry"/> </mxCell> <mxCell id="38" style="rounded=0;html=0;shadow=0;startArrow=none;endArrow=none;endFill=0;endSize=10;strokeColor=#000000;strokeWidth=1;fontSize=12;startFill=0;" edge="1" source="37" target="25" parent="1"> <mxGeometry relative="1" as="geometry"> <mxPoint x="437.1935483870968" y="381" as="targetPoint"/> </mxGeometry> </mxCell> </root></mxGraphModel></model>');
// status.appendChild(modelNode.documentElement);
//
// var fitNode = mxUtils.parseXml('<view scale="0.5" dx="0"/>');
// status.appendChild(fitNode.documentElement);
doc.appendChild(status);
return doc;
};
// Wait for file to be loaded if no animation data is present
if (!startUpdates())
{
editorUi.editor.addListener('fileLoaded', startUpdates);
}
}
});