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node-red/editor/js/history.js

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JavaScript
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/**
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* Copyright 2013, 2015 IBM Corp.
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
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RED.history = (function() {
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var undo_history = [];
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return {
//TODO: this function is a placeholder until there is a 'save' event that can be listened to
markAllDirty: function() {
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for (var i=0;i<undo_history.length;i++) {
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undo_history[i].dirty = true;
}
},
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depth: function() {
return undo_history.length;
},
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push: function(ev) {
undo_history.push(ev);
},
pop: function() {
var ev = undo_history.pop();
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var i;
var node;
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var subflow;
var modifiedTabs = {};
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if (ev) {
if (ev.t == 'add') {
if (ev.nodes) {
for (i=0;i<ev.nodes.length;i++) {
node = RED.nodes.node(ev.nodes[i]);
if (node.z) {
modifiedTabs[node.z] = true;
}
RED.nodes.remove(ev.nodes[i]);
}
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}
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.removeLink(ev.links[i]);
}
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}
if (ev.workspaces) {
for (i=0;i<ev.workspaces.length;i++) {
RED.nodes.removeWorkspace(ev.workspaces[i].id);
RED.workspaces.remove(ev.workspaces[i]);
}
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}
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if (ev.subflows) {
for (i=0;i<ev.subflows.length;i++) {
RED.nodes.removeSubflow(ev.subflows[i]);
RED.workspaces.remove(ev.subflows[i]);
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}
}
if (ev.subflow) {
if (ev.subflow.instances) {
ev.subflow.instances.forEach(function(n) {
var node = RED.nodes.node(n.id);
if (node) {
node.changed = n.changed;
node.dirty = true;
}
});
}
if (ev.subflow.hasOwnProperty('changed')) {
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subflow = RED.nodes.subflow(ev.subflow.id);
if (subflow) {
subflow.changed = ev.subflow.changed;
}
}
}
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} else if (ev.t == "delete") {
if (ev.workspaces) {
for (i=0;i<ev.workspaces.length;i++) {
RED.nodes.addWorkspace(ev.workspaces[i]);
RED.workspaces.add(ev.workspaces[i]);
}
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}
if (ev.subflow && ev.subflow.subflow) {
RED.nodes.addSubflow(ev.subflow.subflow);
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}
if (ev.subflowInputs && ev.subflowInputs.length > 0) {
subflow = RED.nodes.subflow(ev.subflowInputs[0].z);
subflow.in.push(ev.subflowInputs[0]);
subflow.in[0].dirty = true;
}
if (ev.subflowOutputs && ev.subflowOutputs.length > 0) {
subflow = RED.nodes.subflow(ev.subflowOutputs[0].z);
ev.subflowOutputs.sort(function(a,b) { return a.i-b.i});
for (i=0;i<ev.subflowOutputs.length;i++) {
var output = ev.subflowOutputs[i];
subflow.out.splice(output.i,0,output);
for (var j=output.i+1;j<subflow.out.length;j++) {
subflow.out[j].i++;
subflow.out[j].dirty = true;
}
RED.nodes.eachLink(function(l) {
if (l.source.type == "subflow:"+subflow.id) {
if (l.sourcePort >= output.i) {
l.sourcePort++;
}
}
});
}
}
if (ev.subflow && ev.subflow.hasOwnProperty('instances')) {
ev.subflow.instances.forEach(function(n) {
var node = RED.nodes.node(n.id);
if (node) {
node.changed = n.changed;
node.dirty = true;
}
});
}
if (subflow) {
RED.nodes.filterNodes({type:"subflow:"+subflow.id}).forEach(function(n) {
n.inputs = subflow.in.length;
n.outputs = subflow.out.length;
while (n.outputs > n.ports.length) {
n.ports.push(n.ports.length);
}
n.resize = true;
n.dirty = true;
});
}
if (ev.nodes) {
for (i=0;i<ev.nodes.length;i++) {
RED.nodes.add(ev.nodes[i]);
modifiedTabs[ev.nodes[i].z] = true;
}
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}
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.addLink(ev.links[i]);
}
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}
} else if (ev.t == "move") {
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for (i=0;i<ev.nodes.length;i++) {
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var n = ev.nodes[i];
n.n.x = n.ox;
n.n.y = n.oy;
n.n.dirty = true;
}
} else if (ev.t == "edit") {
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for (i in ev.changes) {
if (ev.changes.hasOwnProperty(i)) {
ev.node[i] = ev.changes[i];
}
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}
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if (ev.subflow) {
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if (ev.subflow.hasOwnProperty('inputCount')) {
if (ev.node.in.length > ev.subflow.inputCount) {
ev.node.in.splice(ev.subflow.inputCount);
} else if (ev.subflow.inputs.length > 0) {
ev.node.in = ev.node.in.concat(ev.subflow.inputs);
}
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}
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if (ev.subflow.hasOwnProperty('outputCount')) {
if (ev.node.out.length > ev.subflow.outputCount) {
ev.node.out.splice(ev.subflow.outputCount);
} else if (ev.subflow.outputs.length > 0) {
ev.node.out = ev.node.out.concat(ev.subflow.outputs);
}
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}
if (ev.subflow.hasOwnProperty('instances')) {
ev.subflow.instances.forEach(function(n) {
var node = RED.nodes.node(n.id);
if (node) {
node.changed = n.changed;
node.dirty = true;
}
});
}
RED.nodes.filterNodes({type:"subflow:"+ev.node.id}).forEach(function(n) {
n.inputs = ev.node.in.length;
n.outputs = ev.node.out.length;
RED.editor.updateNodeProperties(n);
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});
if (ev.node.type === 'subflow') {
$("#menu-item-flow-menu-"+ev.node.id.replace(".","-")).text(ev.node.name);
}
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RED.palette.refresh();
RED.workspaces.refresh();
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} else {
RED.editor.updateNodeProperties(ev.node);
RED.editor.validateNode(ev.node);
}
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.addLink(ev.links[i]);
}
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}
ev.node.dirty = true;
ev.node.changed = ev.changed;
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} else if (ev.t == "createSubflow") {
if (ev.nodes) {
RED.nodes.filterNodes({z:ev.subflow.id}).forEach(function(n) {
n.z = ev.activeWorkspace;
n.dirty = true;
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});
for (i=0;i<ev.nodes.length;i++) {
RED.nodes.remove(ev.nodes[i]);
}
}
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.removeLink(ev.links[i]);
}
}
RED.nodes.removeSubflow(ev.subflow.subflow);
RED.workspaces.remove(ev.subflow.subflow);
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if (ev.removedLinks) {
for (i=0;i<ev.removedLinks.length;i++) {
RED.nodes.addLink(ev.removedLinks[i]);
}
}
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}
Object.keys(modifiedTabs).forEach(function(id) {
var subflow = RED.nodes.subflow(id);
if (subflow) {
RED.editor.validateNode(subflow);
}
});
RED.nodes.dirty(ev.dirty);
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RED.view.redraw(true);
RED.palette.refresh();
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}
}
}
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})();