590 lines
18 KiB
HTML
590 lines
18 KiB
HTML
<!--
|
|
Copyright (c) 2006-2015, JGraph Ltd
|
|
|
|
Scrollbars example for mxGraph. This example demonstrates using
|
|
a scrollable table with different sections in a cell label.
|
|
-->
|
|
<html>
|
|
<head>
|
|
<title>Scrollbars example for mxGraph</title>
|
|
|
|
<style type="text/css" media="screen">
|
|
table.title {
|
|
border-color: black;
|
|
border-collapse: collapse;
|
|
cursor: move;
|
|
height: 26px;
|
|
border-bottom-style: none;
|
|
color: black;
|
|
}
|
|
table.title th {
|
|
font-size: 10pt;
|
|
font-family: Verdana;
|
|
white-space: nowrap;
|
|
background: lightgray;
|
|
font-weight: bold;
|
|
}
|
|
table.erd {
|
|
font-size: 10pt;
|
|
font-family: Verdana;
|
|
border-color: black;
|
|
border-collapse: collapse;
|
|
overflow: auto;
|
|
cursor: move;
|
|
white-space: nowrap;
|
|
}
|
|
table.erd td {
|
|
border-color: black;
|
|
text-align: left;
|
|
color: black;
|
|
}
|
|
button {
|
|
position:absolute;
|
|
}
|
|
</style>
|
|
|
|
<!-- Sets the basepath for the library if not in same directory -->
|
|
<script type="text/javascript">
|
|
mxBasePath = '../src';
|
|
</script>
|
|
|
|
<!-- Loads and initializes the library -->
|
|
<script type="text/javascript" src="../src/js/mxClient.js"></script>
|
|
|
|
<!-- Example code -->
|
|
<script type="text/javascript">
|
|
// Program starts here. Creates a sample graph in the
|
|
// DOM node with the specified ID. This function is invoked
|
|
// from the onLoad event handler of the document (see below).
|
|
function main(container)
|
|
{
|
|
// Checks if the browser is supported
|
|
if (!mxClient.isBrowserSupported())
|
|
{
|
|
// Displays an error message if the browser is not supported.
|
|
mxUtils.error('Browser is not supported!', 200, false);
|
|
}
|
|
else
|
|
{
|
|
// Must be disabled to compute positions inside the DOM tree of the cell label.
|
|
mxGraphView.prototype.optimizeVmlReflows = false;
|
|
|
|
// If connect preview is not moved away then getCellAt is used to detect the cell under
|
|
// the mouse if the mouse is over the preview shape in IE (no event transparency), ie.
|
|
// the built-in hit-detection of the HTML document will not be used in this case. This is
|
|
// not a problem here since the preview moves away from the mouse as soon as it connects
|
|
// to any given table row. This is because the edge connects to the outside of the row and
|
|
// is aligned to the grid during the preview.
|
|
mxConnectionHandler.prototype.movePreviewAway = false;
|
|
|
|
// Disables foreignObjects
|
|
mxClient.NO_FO = true;
|
|
|
|
// Enables move preview in HTML to appear on top
|
|
mxGraphHandler.prototype.htmlPreview = true;
|
|
|
|
// Enables connect icons to appear on top of HTML
|
|
mxConnectionHandler.prototype.moveIconFront = true;
|
|
|
|
// Defines an icon for creating new connections in the connection handler.
|
|
// This will automatically disable the highlighting of the source vertex.
|
|
mxConnectionHandler.prototype.connectImage = new mxImage('images/connector.gif', 16, 16);
|
|
|
|
// Support for certain CSS styles in quirks mode
|
|
if (mxClient.IS_QUIRKS)
|
|
{
|
|
new mxDivResizer(container);
|
|
}
|
|
|
|
// Disables the context menu
|
|
mxEvent.disableContextMenu(container);
|
|
|
|
// Overrides target perimeter point for connection previews
|
|
mxConnectionHandler.prototype.getTargetPerimeterPoint = function(state, me)
|
|
{
|
|
// Determines the y-coordinate of the target perimeter point
|
|
// by using the currentRowNode assigned in updateRow
|
|
var y = me.getY();
|
|
|
|
if (this.currentRowNode != null)
|
|
{
|
|
y = getRowY(state, this.currentRowNode);
|
|
}
|
|
|
|
// Checks on which side of the terminal to leave
|
|
var x = state.x;
|
|
|
|
if (this.previous.getCenterX() > state.getCenterX())
|
|
{
|
|
x += state.width;
|
|
}
|
|
|
|
return new mxPoint(x, y);
|
|
};
|
|
|
|
// Overrides source perimeter point for connection previews
|
|
mxConnectionHandler.prototype.getSourcePerimeterPoint = function(state, next, me)
|
|
{
|
|
var y = me.getY();
|
|
|
|
if (this.sourceRowNode != null)
|
|
{
|
|
y = getRowY(state, this.sourceRowNode);
|
|
}
|
|
|
|
// Checks on which side of the terminal to leave
|
|
var x = state.x;
|
|
|
|
if (next.x > state.getCenterX())
|
|
{
|
|
x += state.width;
|
|
}
|
|
|
|
return new mxPoint(x, y);
|
|
};
|
|
|
|
// Disables connections to invalid rows
|
|
mxConnectionHandler.prototype.isValidTarget = function(cell)
|
|
{
|
|
return this.currentRowNode != null;
|
|
};
|
|
|
|
// Creates the graph inside the given container
|
|
var graph = new mxGraph(container);
|
|
|
|
// Uses the entity perimeter (below) as default
|
|
graph.stylesheet.getDefaultVertexStyle()[mxConstants.STYLE_VERTICAL_ALIGN] = mxConstants.ALIGN_TOP;
|
|
graph.stylesheet.getDefaultVertexStyle()[mxConstants.STYLE_PERIMETER] =
|
|
mxPerimeter.EntityPerimeter;
|
|
graph.stylesheet.getDefaultVertexStyle()[mxConstants.STYLE_SHADOW] = true;
|
|
graph.stylesheet.getDefaultVertexStyle()[mxConstants.STYLE_FILLCOLOR] = '#DDEAFF';
|
|
graph.stylesheet.getDefaultVertexStyle()[mxConstants.STYLE_GRADIENTCOLOR] = '#A9C4EB';
|
|
delete graph.stylesheet.getDefaultVertexStyle()[mxConstants.STYLE_STROKECOLOR];
|
|
|
|
// Used for HTML labels that use up the complete vertex space (see
|
|
// graph.cellRenderer.redrawLabel below for syncing the size)
|
|
graph.stylesheet.getDefaultVertexStyle()[mxConstants.STYLE_OVERFLOW] = 'fill';
|
|
|
|
// Uses the entity edge style as default
|
|
graph.stylesheet.getDefaultEdgeStyle()[mxConstants.STYLE_EDGE] =
|
|
mxEdgeStyle.EntityRelation;
|
|
graph.stylesheet.getDefaultEdgeStyle()[mxConstants.STYLE_STROKECOLOR] = 'black';
|
|
graph.stylesheet.getDefaultEdgeStyle()[mxConstants.STYLE_FONTCOLOR] = 'black';
|
|
|
|
// Allows new connections to be made but do not allow existing
|
|
// connections to be changed for the sake of simplicity of this
|
|
// example
|
|
graph.setCellsDisconnectable(false);
|
|
graph.setAllowDanglingEdges(false);
|
|
graph.setCellsEditable(false);
|
|
graph.setConnectable(true);
|
|
graph.setPanning(true);
|
|
graph.centerZoom = false;
|
|
|
|
// Override folding to allow for tables
|
|
graph.isCellFoldable = function(cell, collapse)
|
|
{
|
|
return this.getModel().isVertex(cell);
|
|
};
|
|
|
|
// Overrides connectable state
|
|
graph.isCellConnectable = function(cell)
|
|
{
|
|
return !this.isCellCollapsed(cell);
|
|
};
|
|
|
|
// Enables HTML markup in all labels
|
|
graph.setHtmlLabels(true);
|
|
|
|
// Scroll events should not start moving the vertex
|
|
graph.cellRenderer.isLabelEvent = function(state, evt)
|
|
{
|
|
var source = mxEvent.getSource(evt);
|
|
|
|
return state.text != null && source != state.text.node &&
|
|
source != state.text.node.getElementsByTagName('div')[0];
|
|
};
|
|
|
|
// Adds scrollbars to the outermost div and keeps the
|
|
// DIV position and size the same as the vertex
|
|
var oldRedrawLabel = graph.cellRenderer.redrawLabel;
|
|
graph.cellRenderer.redrawLabel = function(state)
|
|
{
|
|
oldRedrawLabel.apply(this, arguments); // "supercall"
|
|
var graph = state.view.graph;
|
|
var model = graph.model;
|
|
|
|
if (model.isVertex(state.cell) && state.text != null)
|
|
{
|
|
// Scrollbars are on the div
|
|
var s = graph.view.scale;
|
|
state.text.node.style.overflow = 'hidden';
|
|
var div = state.text.node.getElementsByTagName('div')[0];
|
|
|
|
if (div != null)
|
|
{
|
|
// Adds height of the title table cell
|
|
var oh = 26;
|
|
|
|
div.style.display = 'block';
|
|
div.style.top = oh + 'px';
|
|
div.style.width = Math.max(1, Math.round(state.width / s)) + 'px';
|
|
div.style.height = Math.max(1, Math.round((state.height / s) - oh)) + 'px';
|
|
|
|
// Installs the handler for updating connected edges
|
|
if (div.scrollHandler == null)
|
|
{
|
|
div.scrollHandler = true;
|
|
|
|
var updateEdges = mxUtils.bind(this, function()
|
|
{
|
|
var edgeCount = model.getEdgeCount(state.cell);
|
|
|
|
// Only updates edges to avoid update in DOM order
|
|
// for text label which would reset the scrollbar
|
|
for (var i = 0; i < edgeCount; i++)
|
|
{
|
|
var edge = model.getEdgeAt(state.cell, i);
|
|
graph.view.invalidate(edge, true, false);
|
|
graph.view.validate(edge);
|
|
}
|
|
});
|
|
|
|
mxEvent.addListener(div, 'scroll', updateEdges);
|
|
mxEvent.addListener(div, 'mouseup', updateEdges);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
// Adds a new function to update the currentRow based on the given event
|
|
// and return the DOM node for that row
|
|
graph.connectionHandler.updateRow = function(target)
|
|
{
|
|
while (target != null && target.nodeName != 'TR')
|
|
{
|
|
target = target.parentNode;
|
|
}
|
|
|
|
this.currentRow = null;
|
|
|
|
// Checks if we're dealing with a row in the correct table
|
|
if (target != null && target.parentNode.parentNode.className == 'erd')
|
|
{
|
|
// Stores the current row number in a property so that it can
|
|
// be retrieved to create the preview and final edge
|
|
var rowNumber = 0;
|
|
var current = target.parentNode.firstChild;
|
|
|
|
while (target != current && current != null)
|
|
{
|
|
current = current.nextSibling;
|
|
rowNumber++;
|
|
}
|
|
|
|
this.currentRow = rowNumber + 1;
|
|
}
|
|
else
|
|
{
|
|
target = null;
|
|
}
|
|
|
|
return target;
|
|
};
|
|
|
|
// Adds placement of the connect icon based on the mouse event target (row)
|
|
graph.connectionHandler.updateIcons = function(state, icons, me)
|
|
{
|
|
var target = me.getSource();
|
|
target = this.updateRow(target);
|
|
|
|
if (target != null && this.currentRow != null)
|
|
{
|
|
var div = target.parentNode.parentNode.parentNode;
|
|
var s = state.view.scale;
|
|
|
|
icons[0].node.style.visibility = 'visible';
|
|
icons[0].bounds.x = state.x + target.offsetLeft + Math.min(state.width,
|
|
target.offsetWidth * s) - this.icons[0].bounds.width - 2;
|
|
icons[0].bounds.y = state.y - this.icons[0].bounds.height / 2 + (target.offsetTop +
|
|
target.offsetHeight / 2 - div.scrollTop + div.offsetTop) * s;
|
|
icons[0].redraw();
|
|
|
|
this.currentRowNode = target;
|
|
}
|
|
else
|
|
{
|
|
icons[0].node.style.visibility = 'hidden';
|
|
}
|
|
};
|
|
|
|
// Updates the targetRow in the preview edge State
|
|
var oldMouseMove = graph.connectionHandler.mouseMove;
|
|
graph.connectionHandler.mouseMove = function(sender, me)
|
|
{
|
|
if (this.edgeState != null)
|
|
{
|
|
this.currentRowNode = this.updateRow(me.getSource());
|
|
|
|
if (this.currentRow != null)
|
|
{
|
|
this.edgeState.cell.value.setAttribute('targetRow', this.currentRow);
|
|
}
|
|
else
|
|
{
|
|
this.edgeState.cell.value.setAttribute('targetRow', '0');
|
|
}
|
|
|
|
// Destroys icon to prevent event redirection via image in IE
|
|
this.destroyIcons();
|
|
}
|
|
|
|
oldMouseMove.apply(this, arguments);
|
|
};
|
|
|
|
// Creates the edge state that may be used for preview
|
|
graph.connectionHandler.createEdgeState = function(me)
|
|
{
|
|
var relation = doc.createElement('Relation');
|
|
relation.setAttribute('sourceRow', this.currentRow || '0');
|
|
relation.setAttribute('targetRow', '0');
|
|
|
|
var edge = this.createEdge(relation);
|
|
var style = this.graph.getCellStyle(edge);
|
|
var state = new mxCellState(this.graph.view, edge, style);
|
|
|
|
// Stores the source row in the handler
|
|
this.sourceRowNode = this.currentRowNode;
|
|
|
|
return state;
|
|
};
|
|
|
|
// Overrides getLabel to return empty labels for edges and
|
|
// short markup for collapsed cells.
|
|
graph.getLabel = function(cell)
|
|
{
|
|
if (this.getModel().isVertex(cell))
|
|
{
|
|
if (this.isCellCollapsed(cell))
|
|
{
|
|
return '<table style="overflow:hidden;" width="100%" height="100%" border="1" cellpadding="4" class="title" style="height:100%;">' +
|
|
'<tr><th>Customers</th></tr>' +
|
|
'</table>';
|
|
}
|
|
else
|
|
{
|
|
return '<table style="overflow:hidden;" width="100%" border="1" cellpadding="4" class="title">' +
|
|
'<tr><th colspan="2">Customers</th></tr>' +
|
|
'</table>'+
|
|
'<div style="overflow:auto;cursor:default;">'+
|
|
'<table width="100%" height="100%" border="1" cellpadding="4" class="erd">' +
|
|
'<tr><td>' +
|
|
'<img align="center" src="images/key.png"/>' +
|
|
'<img align="center" src="images/plus.png"/>' +
|
|
'</td><td>' +
|
|
'<u>customerId</u></td></tr><tr><td></td><td>number</td></tr>' +
|
|
'<tr><td></td><td>firstName</td></tr><tr><td></td><td>lastName</td></tr>' +
|
|
'<tr><td></td><td>streetAddress</td></tr><tr><td></td><td>city</td></tr>' +
|
|
'<tr><td></td><td>state</td></tr><tr><td></td><td>zip</td></tr>' +
|
|
'</table></div>';
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return '';
|
|
}
|
|
};
|
|
|
|
// User objects (data) for the individual cells
|
|
var doc = mxUtils.createXmlDocument();
|
|
|
|
// Same should be used to create the XML node for the table
|
|
// description and the rows (most probably as child nodes)
|
|
var relation = doc.createElement('Relation');
|
|
relation.setAttribute('sourceRow', '4');
|
|
relation.setAttribute('targetRow', '6');
|
|
|
|
// Enables rubberband selection
|
|
new mxRubberband(graph);
|
|
|
|
// Enables key handling (eg. escape)
|
|
new mxKeyHandler(graph);
|
|
|
|
// Gets the default parent for inserting new cells. This
|
|
// is normally the first child of the root (ie. layer 0).
|
|
var parent = graph.getDefaultParent();
|
|
|
|
// Adds cells to the model in a single step
|
|
var width = 160;
|
|
graph.getModel().beginUpdate();
|
|
try
|
|
{
|
|
var v1 = graph.insertVertex(parent, null, '', 20, 20, width, 0);
|
|
var v2 = graph.insertVertex(parent, null, '', 400, 150, width, 0);
|
|
var e1 = graph.insertEdge(parent, null, relation, v1, v2);
|
|
|
|
// Updates the height of the cell (override width
|
|
// for table width is set to 100%)
|
|
graph.updateCellSize(v1);
|
|
v1.geometry.width = width;
|
|
v1.geometry.alternateBounds = new mxRectangle(0, 0, width, 27);
|
|
|
|
// Updates the height of the cell (override width
|
|
// for table width is set to 100%)
|
|
graph.updateCellSize(v2);
|
|
v2.geometry.width = width;
|
|
v2.geometry.alternateBounds = new mxRectangle(0, 0, width, 27);
|
|
}
|
|
finally
|
|
{
|
|
// Updates the display
|
|
graph.getModel().endUpdate();
|
|
}
|
|
|
|
var btn1 = mxUtils.button('+', function()
|
|
{
|
|
graph.zoomIn();
|
|
});
|
|
btn1.style.marginLeft = '20px';
|
|
|
|
document.body.appendChild(btn1);
|
|
document.body.appendChild(mxUtils.button('-', function()
|
|
{
|
|
graph.zoomOut();
|
|
}));
|
|
}
|
|
};
|
|
|
|
// Implements a special perimeter for table rows inside the table markup
|
|
mxGraphView.prototype.updateFloatingTerminalPoint = function(edge, start, end, source)
|
|
{
|
|
var next = this.getNextPoint(edge, end, source);
|
|
var div = start.text.node.getElementsByTagName('div')[0];
|
|
|
|
var x = start.x;
|
|
var y = start.getCenterY();
|
|
|
|
// Checks on which side of the terminal to leave
|
|
if (next.x > x + start.width / 2)
|
|
{
|
|
x += start.width;
|
|
}
|
|
|
|
if (div != null)
|
|
{
|
|
y = start.getCenterY() - div.scrollTop;
|
|
|
|
if (mxUtils.isNode(edge.cell.value) && !this.graph.isCellCollapsed(start.cell))
|
|
{
|
|
var attr = (source) ? 'sourceRow' : 'targetRow';
|
|
var row = parseInt(edge.cell.value.getAttribute(attr));
|
|
|
|
// HTML labels contain an outer table which is built-in
|
|
var table = div.getElementsByTagName('table')[0];
|
|
var trs = table.getElementsByTagName('tr');
|
|
var tr = trs[Math.min(trs.length - 1, row - 1)];
|
|
|
|
// Gets vertical center of source or target row
|
|
if (tr != null)
|
|
{
|
|
y = getRowY(start, tr);
|
|
}
|
|
}
|
|
|
|
// Keeps vertical coordinate inside start
|
|
var offsetTop = parseInt(div.style.top) * start.view.scale;
|
|
y = Math.min(start.y + start.height, Math.max(start.y + offsetTop, y));
|
|
|
|
// Updates the vertical position of the nearest point if we're not
|
|
// dealing with a connection preview, in which case either the
|
|
// edgeState or the absolutePoints are null
|
|
if (edge != null && edge.absolutePoints != null)
|
|
{
|
|
next.y = y;
|
|
}
|
|
}
|
|
|
|
edge.setAbsoluteTerminalPoint(new mxPoint(x, y), source);
|
|
|
|
// Routes multiple incoming edges along common waypoints if
|
|
// the edges have a common target row
|
|
if (source && mxUtils.isNode(edge.cell.value) && start != null && end != null)
|
|
{
|
|
var edges = this.graph.getEdgesBetween(start.cell, end.cell, true);
|
|
var tmp = [];
|
|
|
|
// Filters the edges with the same source row
|
|
var row = edge.cell.value.getAttribute('targetRow');
|
|
|
|
for (var i = 0; i < edges.length; i++)
|
|
{
|
|
if (mxUtils.isNode(edges[i].value) &&
|
|
edges[i].value.getAttribute('targetRow') == row)
|
|
{
|
|
tmp.push(edges[i]);
|
|
}
|
|
}
|
|
|
|
edges = tmp;
|
|
|
|
if (edges.length > 1 && edge.cell == edges[edges.length - 1])
|
|
{
|
|
// Finds the vertical center
|
|
var states = [];
|
|
var y = 0;
|
|
|
|
for (var i = 0; i < edges.length; i++)
|
|
{
|
|
states[i] = this.getState(edges[i]);
|
|
y += states[i].absolutePoints[0].y;
|
|
}
|
|
|
|
y /= edges.length;
|
|
|
|
for (var i = 0; i < states.length; i++)
|
|
{
|
|
var x = states[i].absolutePoints[1].x;
|
|
|
|
if (states[i].absolutePoints.length < 5)
|
|
{
|
|
states[i].absolutePoints.splice(2, 0, new mxPoint(x, y));
|
|
}
|
|
else
|
|
{
|
|
states[i].absolutePoints[2] = new mxPoint(x, y);
|
|
}
|
|
|
|
// Must redraw the previous edges with the changed point
|
|
if (i < states.length - 1)
|
|
{
|
|
this.graph.cellRenderer.redraw(states[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
// Defines global helper function to get y-coordinate for a given cell state and row
|
|
var getRowY = function(state, tr)
|
|
{
|
|
var s = state.view.scale;
|
|
var div = tr.parentNode.parentNode.parentNode;
|
|
var offsetTop = parseInt(div.style.top);
|
|
var y = state.y + (tr.offsetTop + tr.offsetHeight / 2 - div.scrollTop + offsetTop) * s;
|
|
y = Math.min(state.y + state.height, Math.max(state.y + offsetTop * s, y));
|
|
|
|
return y;
|
|
};
|
|
</script>
|
|
</head>
|
|
|
|
<!-- Page passes the container for the graph to the program -->
|
|
<body onload="main(document.getElementById('graphContainer'))">
|
|
|
|
<!-- Creates a container for the graph with a grid wallpaper. Width, height and cursor in the style are for IE only -->
|
|
<div id="graphContainer"
|
|
style="cursor:default;position:absolute;top:30px;left:0px;bottom:0px;right:0px;background:url('editors/images/grid.gif')">
|
|
</div>
|
|
</body>
|
|
</html>
|