vis.js is a dynamic, browser-based visualization library
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var util = require('../../util');
/**
* clears the toolbar div element of children
*
* @private
*/
exports._clearManipulatorBar = function() {
while (this.manipulationDiv.hasChildNodes()) {
this.manipulationDiv.removeChild(this.manipulationDiv.firstChild);
}
};
/**
* Manipulation UI temporarily overloads certain functions to extend or replace them. To be able to restore
* these functions to their original functionality, we saved them in this.cachedFunctions.
* This function restores these functions to their original function.
*
* @private
*/
exports._restoreOverloadedFunctions = function() {
for (var functionName in this.cachedFunctions) {
if (this.cachedFunctions.hasOwnProperty(functionName)) {
this[functionName] = this.cachedFunctions[functionName];
}
}
};
/**
* Enable or disable edit-mode.
*
* @private
*/
exports._toggleEditMode = function() {
this.editMode = !this.editMode;
var toolbar = document.getElementById("network-manipulationDiv");
var closeDiv = document.getElementById("network-manipulation-closeDiv");
var editModeDiv = document.getElementById("network-manipulation-editMode");
if (this.editMode == true) {
toolbar.style.display="block";
closeDiv.style.display="block";
editModeDiv.style.display="none";
closeDiv.onclick = this._toggleEditMode.bind(this);
}
else {
toolbar.style.display="none";
closeDiv.style.display="none";
editModeDiv.style.display="block";
closeDiv.onclick = null;
}
this._createManipulatorBar()
};
/**
* main function, creates the main toolbar. Removes functions bound to the select event. Binds all the buttons of the toolbar.
*
* @private
*/
exports._createManipulatorBar = function() {
// remove bound functions
if (this.boundFunction) {
this.off('select', this.boundFunction);
}
if (this.edgeBeingEdited !== undefined) {
this.edgeBeingEdited._disableControlNodes();
this.edgeBeingEdited = undefined;
this.selectedControlNode = null;
}
// restore overloaded functions
this._restoreOverloadedFunctions();
// resume calculation
this.freezeSimulation = false;
// reset global variables
this.blockConnectingEdgeSelection = false;
this.forceAppendSelection = false;
if (this.editMode == true) {
while (this.manipulationDiv.hasChildNodes()) {
this.manipulationDiv.removeChild(this.manipulationDiv.firstChild);
}
// add the icons to the manipulator div
this.manipulationDiv.innerHTML = "" +
"<span class='network-manipulationUI add' id='network-manipulate-addNode'>" +
"<span class='network-manipulationLabel'>"+this.constants.labels['add'] +"</span></span>" +
"<div class='network-seperatorLine'></div>" +
"<span class='network-manipulationUI connect' id='network-manipulate-connectNode'>" +
"<span class='network-manipulationLabel'>"+this.constants.labels['link'] +"</span></span>";
if (this._getSelectedNodeCount() == 1 && this.triggerFunctions.edit) {
this.manipulationDiv.innerHTML += "" +
"<div class='network-seperatorLine'></div>" +
"<span class='network-manipulationUI edit' id='network-manipulate-editNode'>" +
"<span class='network-manipulationLabel'>"+this.constants.labels['editNode'] +"</span></span>";
}
else if (this._getSelectedEdgeCount() == 1 && this._getSelectedNodeCount() == 0) {
this.manipulationDiv.innerHTML += "" +
"<div class='network-seperatorLine'></div>" +
"<span class='network-manipulationUI edit' id='network-manipulate-editEdge'>" +
"<span class='network-manipulationLabel'>"+this.constants.labels['editEdge'] +"</span></span>";
}
if (this._selectionIsEmpty() == false) {
this.manipulationDiv.innerHTML += "" +
"<div class='network-seperatorLine'></div>" +
"<span class='network-manipulationUI delete' id='network-manipulate-delete'>" +
"<span class='network-manipulationLabel'>"+this.constants.labels['del'] +"</span></span>";
}
// bind the icons
var addNodeButton = document.getElementById("network-manipulate-addNode");
addNodeButton.onclick = this._createAddNodeToolbar.bind(this);
var addEdgeButton = document.getElementById("network-manipulate-connectNode");
addEdgeButton.onclick = this._createAddEdgeToolbar.bind(this);
if (this._getSelectedNodeCount() == 1 && this.triggerFunctions.edit) {
var editButton = document.getElementById("network-manipulate-editNode");
editButton.onclick = this._editNode.bind(this);
}
else if (this._getSelectedEdgeCount() == 1 && this._getSelectedNodeCount() == 0) {
var editButton = document.getElementById("network-manipulate-editEdge");
editButton.onclick = this._createEditEdgeToolbar.bind(this);
}
if (this._selectionIsEmpty() == false) {
var deleteButton = document.getElementById("network-manipulate-delete");
deleteButton.onclick = this._deleteSelected.bind(this);
}
var closeDiv = document.getElementById("network-manipulation-closeDiv");
closeDiv.onclick = this._toggleEditMode.bind(this);
this.boundFunction = this._createManipulatorBar.bind(this);
this.on('select', this.boundFunction);
}
else {
this.editModeDiv.innerHTML = "" +
"<span class='network-manipulationUI edit editmode' id='network-manipulate-editModeButton'>" +
"<span class='network-manipulationLabel'>" + this.constants.labels['edit'] + "</span></span>";
var editModeButton = document.getElementById("network-manipulate-editModeButton");
editModeButton.onclick = this._toggleEditMode.bind(this);
}
};
/**
* Create the toolbar for adding Nodes
*
* @private
*/
exports._createAddNodeToolbar = function() {
// clear the toolbar
this._clearManipulatorBar();
if (this.boundFunction) {
this.off('select', this.boundFunction);
}
// create the toolbar contents
this.manipulationDiv.innerHTML = "" +
"<span class='network-manipulationUI back' id='network-manipulate-back'>" +
"<span class='network-manipulationLabel'>" + this.constants.labels['back'] + " </span></span>" +
"<div class='network-seperatorLine'></div>" +
"<span class='network-manipulationUI none' id='network-manipulate-back'>" +
"<span id='network-manipulatorLabel' class='network-manipulationLabel'>" + this.constants.labels['addDescription'] + "</span></span>";
// bind the icon
var backButton = document.getElementById("network-manipulate-back");
backButton.onclick = this._createManipulatorBar.bind(this);
// we use the boundFunction so we can reference it when we unbind it from the "select" event.
this.boundFunction = this._addNode.bind(this);
this.on('select', this.boundFunction);
};
/**
* create the toolbar to connect nodes
*
* @private
*/
exports._createAddEdgeToolbar = function() {
// clear the toolbar
this._clearManipulatorBar();
this._unselectAll(true);
this.freezeSimulation = true;
if (this.boundFunction) {
this.off('select', this.boundFunction);
}
this._unselectAll();
this.forceAppendSelection = false;
this.blockConnectingEdgeSelection = true;
this.manipulationDiv.innerHTML = "" +
"<span class='network-manipulationUI back' id='network-manipulate-back'>" +
"<span class='network-manipulationLabel'>" + this.constants.labels['back'] + " </span></span>" +
"<div class='network-seperatorLine'></div>" +
"<span class='network-manipulationUI none' id='network-manipulate-back'>" +
"<span id='network-manipulatorLabel' class='network-manipulationLabel'>" + this.constants.labels['linkDescription'] + "</span></span>";
// bind the icon
var backButton = document.getElementById("network-manipulate-back");
backButton.onclick = this._createManipulatorBar.bind(this);
// we use the boundFunction so we can reference it when we unbind it from the "select" event.
this.boundFunction = this._handleConnect.bind(this);
this.on('select', this.boundFunction);
// temporarily overload functions
this.cachedFunctions["_handleTouch"] = this._handleTouch;
this.cachedFunctions["_handleOnRelease"] = this._handleOnRelease;
this._handleTouch = this._handleConnect;
this._handleOnRelease = this._finishConnect;
// redraw to show the unselect
this._redraw();
};
/**
* create the toolbar to edit edges
*
* @private
*/
exports._createEditEdgeToolbar = function() {
// clear the toolbar
this._clearManipulatorBar();
if (this.boundFunction) {
this.off('select', this.boundFunction);
}
this.edgeBeingEdited = this._getSelectedEdge();
this.edgeBeingEdited._enableControlNodes();
this.manipulationDiv.innerHTML = "" +
"<span class='network-manipulationUI back' id='network-manipulate-back'>" +
"<span class='network-manipulationLabel'>" + this.constants.labels['back'] + " </span></span>" +
"<div class='network-seperatorLine'></div>" +
"<span class='network-manipulationUI none' id='network-manipulate-back'>" +
"<span id='network-manipulatorLabel' class='network-manipulationLabel'>" + this.constants.labels['editEdgeDescription'] + "</span></span>";
// bind the icon
var backButton = document.getElementById("network-manipulate-back");
backButton.onclick = this._createManipulatorBar.bind(this);
// temporarily overload functions
this.cachedFunctions["_handleTouch"] = this._handleTouch;
this.cachedFunctions["_handleOnRelease"] = this._handleOnRelease;
this.cachedFunctions["_handleTap"] = this._handleTap;
this.cachedFunctions["_handleDragStart"] = this._handleDragStart;
this.cachedFunctions["_handleOnDrag"] = this._handleOnDrag;
this._handleTouch = this._selectControlNode;
this._handleTap = function () {};
this._handleOnDrag = this._controlNodeDrag;
this._handleDragStart = function () {}
this._handleOnRelease = this._releaseControlNode;
// redraw to show the unselect
this._redraw();
};
/**
* the function bound to the selection event. It checks if you want to connect a cluster and changes the description
* to walk the user through the process.
*
* @private
*/
exports._selectControlNode = function(pointer) {
this.edgeBeingEdited.controlNodes.from.unselect();
this.edgeBeingEdited.controlNodes.to.unselect();
this.selectedControlNode = this.edgeBeingEdited._getSelectedControlNode(this._XconvertDOMtoCanvas(pointer.x),this._YconvertDOMtoCanvas(pointer.y));
if (this.selectedControlNode !== null) {
this.selectedControlNode.select();
this.freezeSimulation = true;
}
this._redraw();
};
/**
* the function bound to the selection event. It checks if you want to connect a cluster and changes the description
* to walk the user through the process.
*
* @private
*/
exports._controlNodeDrag = function(event) {
var pointer = this._getPointer(event.gesture.center);
if (this.selectedControlNode !== null && this.selectedControlNode !== undefined) {
this.selectedControlNode.x = this._XconvertDOMtoCanvas(pointer.x);
this.selectedControlNode.y = this._YconvertDOMtoCanvas(pointer.y);
}
this._redraw();
};
exports._releaseControlNode = function(pointer) {
var newNode = this._getNodeAt(pointer);
if (newNode != null) {
if (this.edgeBeingEdited.controlNodes.from.selected == true) {
this._editEdge(newNode.id, this.edgeBeingEdited.to.id);
this.edgeBeingEdited.controlNodes.from.unselect();
}
if (this.edgeBeingEdited.controlNodes.to.selected == true) {
this._editEdge(this.edgeBeingEdited.from.id, newNode.id);
this.edgeBeingEdited.controlNodes.to.unselect();
}
}
else {
this.edgeBeingEdited._restoreControlNodes();
}
this.freezeSimulation = false;
this._redraw();
};
/**
* the function bound to the selection event. It checks if you want to connect a cluster and changes the description
* to walk the user through the process.
*
* @private
*/
exports._handleConnect = function(pointer) {
if (this._getSelectedNodeCount() == 0) {
var node = this._getNodeAt(pointer);
if (node != null) {
if (node.clusterSize > 1) {
alert("Cannot create edges to a cluster.")
}
else {
this._selectObject(node,false);
// create a node the temporary line can look at
this.sectors['support']['nodes']['targetNode'] = new Node({id:'targetNode'},{},{},this.constants);
this.sectors['support']['nodes']['targetNode'].x = node.x;
this.sectors['support']['nodes']['targetNode'].y = node.y;
this.sectors['support']['nodes']['targetViaNode'] = new Node({id:'targetViaNode'},{},{},this.constants);
this.sectors['support']['nodes']['targetViaNode'].x = node.x;
this.sectors['support']['nodes']['targetViaNode'].y = node.y;
this.sectors['support']['nodes']['targetViaNode'].parentEdgeId = "connectionEdge";
// create a temporary edge
this.edges['connectionEdge'] = new Edge({id:"connectionEdge",from:node.id,to:this.sectors['support']['nodes']['targetNode'].id}, this, this.constants);
this.edges['connectionEdge'].from = node;
this.edges['connectionEdge'].connected = true;
this.edges['connectionEdge'].smooth = true;
this.edges['connectionEdge'].selected = true;
this.edges['connectionEdge'].to = this.sectors['support']['nodes']['targetNode'];
this.edges['connectionEdge'].via = this.sectors['support']['nodes']['targetViaNode'];
this.cachedFunctions["_handleOnDrag"] = this._handleOnDrag;
this._handleOnDrag = function(event) {
var pointer = this._getPointer(event.gesture.center);
this.sectors['support']['nodes']['targetNode'].x = this._XconvertDOMtoCanvas(pointer.x);
this.sectors['support']['nodes']['targetNode'].y = this._YconvertDOMtoCanvas(pointer.y);
this.sectors['support']['nodes']['targetViaNode'].x = 0.5 * (this._XconvertDOMtoCanvas(pointer.x) + this.edges['connectionEdge'].from.x);
this.sectors['support']['nodes']['targetViaNode'].y = this._YconvertDOMtoCanvas(pointer.y);
};
this.moving = true;
this.start();
}
}
}
};
exports._finishConnect = function(pointer) {
if (this._getSelectedNodeCount() == 1) {
// restore the drag function
this._handleOnDrag = this.cachedFunctions["_handleOnDrag"];
delete this.cachedFunctions["_handleOnDrag"];
// remember the edge id
var connectFromId = this.edges['connectionEdge'].fromId;
// remove the temporary nodes and edge
delete this.edges['connectionEdge'];
delete this.sectors['support']['nodes']['targetNode'];
delete this.sectors['support']['nodes']['targetViaNode'];
var node = this._getNodeAt(pointer);
if (node != null) {
if (node.clusterSize > 1) {
alert("Cannot create edges to a cluster.")
}
else {
this._createEdge(connectFromId,node.id);
this._createManipulatorBar();
}
}
this._unselectAll();
}
};
/**
* Adds a node on the specified location
*/
exports._addNode = function() {
if (this._selectionIsEmpty() && this.editMode == true) {
var positionObject = this._pointerToPositionObject(this.pointerPosition);
var defaultData = {id:util.randomUUID(),x:positionObject.left,y:positionObject.top,label:"new",allowedToMoveX:true,allowedToMoveY:true};
if (this.triggerFunctions.add) {
if (this.triggerFunctions.add.length == 2) {
var me = this;
this.triggerFunctions.add(defaultData, function(finalizedData) {
me.nodesData.add(finalizedData);
me._createManipulatorBar();
me.moving = true;
me.start();
});
}
else {
alert(this.constants.labels['addError']);
this._createManipulatorBar();
this.moving = true;
this.start();
}
}
else {
this.nodesData.add(defaultData);
this._createManipulatorBar();
this.moving = true;
this.start();
}
}
};
/**
* connect two nodes with a new edge.
*
* @private
*/
exports._createEdge = function(sourceNodeId,targetNodeId) {
if (this.editMode == true) {
var defaultData = {from:sourceNodeId, to:targetNodeId};
if (this.triggerFunctions.connect) {
if (this.triggerFunctions.connect.length == 2) {
var me = this;
this.triggerFunctions.connect(defaultData, function(finalizedData) {
me.edgesData.add(finalizedData);
me.moving = true;
me.start();
});
}
else {
alert(this.constants.labels["linkError"]);
this.moving = true;
this.start();
}
}
else {
this.edgesData.add(defaultData);
this.moving = true;
this.start();
}
}
};
/**
* connect two nodes with a new edge.
*
* @private
*/
exports._editEdge = function(sourceNodeId,targetNodeId) {
if (this.editMode == true) {
var defaultData = {id: this.edgeBeingEdited.id, from:sourceNodeId, to:targetNodeId};
if (this.triggerFunctions.editEdge) {
if (this.triggerFunctions.editEdge.length == 2) {
var me = this;
this.triggerFunctions.editEdge(defaultData, function(finalizedData) {
me.edgesData.update(finalizedData);
me.moving = true;
me.start();
});
}
else {
alert(this.constants.labels["linkError"]);
this.moving = true;
this.start();
}
}
else {
this.edgesData.update(defaultData);
this.moving = true;
this.start();
}
}
};
/**
* Create the toolbar to edit the selected node. The label and the color can be changed. Other colors are derived from the chosen color.
*
* @private
*/
exports._editNode = function() {
if (this.triggerFunctions.edit && this.editMode == true) {
var node = this._getSelectedNode();
var data = {id:node.id,
label: node.label,
group: node.group,
shape: node.shape,
color: {
background:node.color.background,
border:node.color.border,
highlight: {
background:node.color.highlight.background,
border:node.color.highlight.border
}
}};
if (this.triggerFunctions.edit.length == 2) {
var me = this;
this.triggerFunctions.edit(data, function (finalizedData) {
me.nodesData.update(finalizedData);
me._createManipulatorBar();
me.moving = true;
me.start();
});
}
else {
alert(this.constants.labels["editError"]);
}
}
else {
alert(this.constants.labels["editBoundError"]);
}
};
/**
* delete everything in the selection
*
* @private
*/
exports._deleteSelected = function() {
if (!this._selectionIsEmpty() && this.editMode == true) {
if (!this._clusterInSelection()) {
var selectedNodes = this.getSelectedNodes();
var selectedEdges = this.getSelectedEdges();
if (this.triggerFunctions.del) {
var me = this;
var data = {nodes: selectedNodes, edges: selectedEdges};
if (this.triggerFunctions.del.length = 2) {
this.triggerFunctions.del(data, function (finalizedData) {
me.edgesData.remove(finalizedData.edges);
me.nodesData.remove(finalizedData.nodes);
me._unselectAll();
me.moving = true;
me.start();
});
}
else {
alert(this.constants.labels["deleteError"])
}
}
else {
this.edgesData.remove(selectedEdges);
this.nodesData.remove(selectedNodes);
this._unselectAll();
this.moving = true;
this.start();
}
}
else {
alert(this.constants.labels["deleteClusterError"]);
}
}
};