/**
* Copyright JS Foundation and other contributors, http://js.foundation
*
* 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.
**/
RED.history = (function() {
var undo_history = [];
function undoEvent(ev) {
var i;
var len;
var node;
var subflow;
var modifiedTabs = {};
if (ev) {
if (ev.t == 'multi') {
len = ev.events.length;
for (i=len-1;i>=0;i--) {
undoEvent(ev.events[i]);
}
} else if (ev.t == 'replace') {
RED.nodes.clear();
var imported = RED.nodes.import(ev.config);
imported[0].forEach(function(n) {
if (ev.changed[n.id]) {
n.changed = true;
}
})
RED.nodes.version(ev.rev);
} else 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]);
}
}
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.removeLink(ev.links[i]);
}
}
if (ev.workspaces) {
for (i=0;i<ev.workspaces.length;i++) {
RED.nodes.removeWorkspace(ev.workspaces[i].id);
RED.workspaces.remove(ev.workspaces[i]);
}
}
if (ev.subflows) {
for (i=0;i<ev.subflows.length;i++) {
RED.nodes.removeSubflow(ev.subflows[i]);
RED.workspaces.remove(ev.subflows[i]);
}
}
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')) {
subflow = RED.nodes.subflow(ev.subflow.id);
if (subflow) {
subflow.changed = ev.subflow.changed;
}
}
}
if (ev.removedLinks) {
for (i=0;i<ev.removedLinks.length;i++) {
RED.nodes.addLink(ev.removedLinks[i]);
}
}
} 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]);
}
}
if (ev.subflow && ev.subflow.subflow) {
RED.nodes.addSubflow(ev.subflow.subflow);
}
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;
}
}
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.addLink(ev.links[i]);
}
}
if (ev.changes) {
for (i in ev.changes) {
if (ev.changes.hasOwnProperty(i)) {
node = RED.nodes.node(i);
if (node) {
for (var d in ev.changes[i]) {
if (ev.changes[i].hasOwnProperty(d)) {
node[d] = ev.changes[i][d];
}
}
node.dirty = true;
}
}
}
}
} else if (ev.t == "move") {
for (i=0;i<ev.nodes.length;i++) {
var n = ev.nodes[i];
n.n.x = n.ox;
n.n.y = n.oy;
n.n.dirty = true;
n.n.moved = n.moved;
}
// A move could have caused a link splice
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.removeLink(ev.links[i]);
}
}
if (ev.removedLinks) {
for (i=0;i<ev.removedLinks.length;i++) {
RED.nodes.addLink(ev.removedLinks[i]);
}
}
} else if (ev.t == "edit") {
for (i in ev.changes) {
if (ev.changes.hasOwnProperty(i)) {
if (ev.node._def.defaults[i] && ev.node._def.defaults[i].type) {
// This is a config node property
var currentConfigNode = RED.nodes.node(ev.node[i]);
if (currentConfigNode) {
currentConfigNode.users.splice(currentConfigNode.users.indexOf(ev.node),1);
}
var newConfigNode = RED.nodes.node(ev.changes[i]);
if (newConfigNode) {
newConfigNode.users.push(ev.node);
}
}
ev.node[i] = ev.changes[i];
}
}
if (ev.subflow) {
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);
}
}
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);
}
}
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);
});
} else {
var outputMap;
if (ev.outputMap) {
outputMap = {};
for (var port in ev.outputMap) {
if (ev.outputMap.hasOwnProperty(port) && ev.outputMap[port] !== "-1") {
outputMap[ev.outputMap[port]] = port;
}
}
}
RED.editor.updateNodeProperties(ev.node,outputMap);
RED.editor.validateNode(ev.node);
}
if (ev.links) {
for (i=0;i<ev.links.length;i++) {
RED.nodes.addLink(ev.links[i]);
}
}
ev.node.dirty = true;
ev.node.changed = ev.changed;
} else if (ev.t == "createSubflow") {
if (ev.nodes) {
RED.nodes.filterNodes({z:ev.subflow.subflow.id}).forEach(function(n) {
n.z = ev.activeWorkspace;
n.dirty = true;
});
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);
if (ev.removedLinks) {
for (i=0;i<ev.removedLinks.length;i++) {
RED.nodes.addLink(ev.removedLinks[i]);
}
}
} else if (ev.t == "reorder") {
if (ev.order) {
RED.workspaces.order(ev.order);
}
}
Object.keys(modifiedTabs).forEach(function(id) {
var subflow = RED.nodes.subflow(id);
if (subflow) {
RED.editor.validateNode(subflow);
}
});
RED.nodes.dirty(ev.dirty);
RED.view.redraw(true);
RED.palette.refresh();
RED.workspaces.refresh();
RED.sidebar.config.refresh();
}
}
return {
//TODO: this function is a placeholder until there is a 'save' event that can be listened to
markAllDirty: function() {
for (var i=0;i<undo_history.length;i++) {
undo_history[i].dirty = true;
}
},
list: function() {
return undo_history
},
depth: function() {
return undo_history.length;
},
push: function(ev) {
undo_history.push(ev);
},
pop: function() {
var ev = undo_history.pop();
undoEvent(ev);
},
peek: function() {
return undo_history[undo_history.length-1];
},
clear: function() {
undo_history = [];
}
}
})();