mirror of
https://github.com/hedgedoc/hedgedoc.git
synced 2024-11-22 09:46:30 -05:00
354 lines
10 KiB
JavaScript
354 lines
10 KiB
JavaScript
/*global ot */
|
|
|
|
ot.EditorClient = (function () {
|
|
'use strict';
|
|
|
|
var Client = ot.Client;
|
|
var Selection = ot.Selection;
|
|
var UndoManager = ot.UndoManager;
|
|
var TextOperation = ot.TextOperation;
|
|
var WrappedOperation = ot.WrappedOperation;
|
|
|
|
|
|
function SelfMeta (selectionBefore, selectionAfter) {
|
|
this.selectionBefore = selectionBefore;
|
|
this.selectionAfter = selectionAfter;
|
|
}
|
|
|
|
SelfMeta.prototype.invert = function () {
|
|
return new SelfMeta(this.selectionAfter, this.selectionBefore);
|
|
};
|
|
|
|
SelfMeta.prototype.compose = function (other) {
|
|
return new SelfMeta(this.selectionBefore, other.selectionAfter);
|
|
};
|
|
|
|
SelfMeta.prototype.transform = function (operation) {
|
|
return new SelfMeta(
|
|
(this.selectionBefore ? this.selectionBefore.transform(operation) : null),
|
|
(this.selectionAfter ? this.selectionAfter.transform(operation) : null)
|
|
);
|
|
};
|
|
|
|
|
|
function OtherMeta (clientId, selection) {
|
|
this.clientId = clientId;
|
|
this.selection = selection;
|
|
}
|
|
|
|
OtherMeta.fromJSON = function (obj) {
|
|
return new OtherMeta(
|
|
obj.clientId,
|
|
obj.selection && Selection.fromJSON(obj.selection)
|
|
);
|
|
};
|
|
|
|
OtherMeta.prototype.transform = function (operation) {
|
|
return new OtherMeta(
|
|
this.clientId,
|
|
this.selection && this.selection.transform(operation)
|
|
);
|
|
};
|
|
|
|
|
|
function OtherClient (id, listEl, editorAdapter, name, color, selection) {
|
|
this.id = id;
|
|
this.listEl = listEl;
|
|
this.editorAdapter = editorAdapter;
|
|
this.name = name;
|
|
this.color = color;
|
|
|
|
this.li = document.createElement('li');
|
|
if (name) {
|
|
this.li.textContent = name;
|
|
this.listEl.appendChild(this.li);
|
|
}
|
|
|
|
if(!color)
|
|
this.setColor(name ? hueFromName(name) : Math.random());
|
|
else
|
|
this.setForceColor(color);
|
|
if (selection) { this.updateSelection(selection); }
|
|
}
|
|
|
|
OtherClient.prototype.setColor = function (hue) {
|
|
this.hue = hue;
|
|
this.color = hsl2hex(hue, 0.75, 0.5);
|
|
this.lightColor = hsl2hex(hue, 0.5, 0.9);
|
|
if (this.li) { this.li.style.color = this.color; }
|
|
};
|
|
|
|
OtherClient.prototype.setForceColor = function (color) {
|
|
this.hue = null;
|
|
this.color = color;
|
|
this.lightColor = color;
|
|
if (this.li) { this.li.style.color = this.color; }
|
|
};
|
|
|
|
OtherClient.prototype.setName = function (name) {
|
|
if (this.name === name) { return; }
|
|
this.name = name;
|
|
|
|
this.li.textContent = name;
|
|
if (!this.li.parentNode) {
|
|
this.listEl.appendChild(this.li);
|
|
}
|
|
|
|
this.setColor(hueFromName(name));
|
|
};
|
|
|
|
OtherClient.prototype.updateSelection = function (selection) {
|
|
this.removeSelection();
|
|
this.selection = selection;
|
|
this.mark = this.editorAdapter.setOtherSelection(
|
|
selection,
|
|
selection.position === selection.selectionEnd ? this.color : this.lightColor,
|
|
this.id
|
|
);
|
|
};
|
|
|
|
OtherClient.prototype.remove = function () {
|
|
if (this.li) { removeElement(this.li); }
|
|
this.removeSelection();
|
|
};
|
|
|
|
OtherClient.prototype.removeSelection = function () {
|
|
if (this.mark) {
|
|
this.mark.clear();
|
|
this.mark = null;
|
|
}
|
|
};
|
|
|
|
|
|
function EditorClient (revision, clients, serverAdapter, editorAdapter) {
|
|
Client.call(this, revision);
|
|
this.serverAdapter = serverAdapter;
|
|
this.editorAdapter = editorAdapter;
|
|
this.undoManager = new UndoManager();
|
|
|
|
this.initializeClientList();
|
|
this.initializeClients(clients);
|
|
|
|
var self = this;
|
|
|
|
this.editorAdapter.registerCallbacks({
|
|
change: function (operation, inverse) { self.onChange(operation, inverse); },
|
|
selectionChange: function () { self.onSelectionChange(); },
|
|
blur: function () { self.onBlur(); }
|
|
});
|
|
this.editorAdapter.registerUndo(function () { self.undo(); });
|
|
this.editorAdapter.registerRedo(function () { self.redo(); });
|
|
|
|
this.serverAdapter.registerCallbacks({
|
|
client_left: function (clientId) { self.onClientLeft(clientId); },
|
|
set_name: function (clientId, name) { self.getClientObject(clientId).setName(name); },
|
|
set_color: function (clientId, color) { self.getClientObject(clientId).setForceColor(color); },
|
|
ack: function (revision) { self.serverAck(revision); },
|
|
operation: function (revision, operation) {
|
|
self.applyServer(revision, TextOperation.fromJSON(operation));
|
|
},
|
|
operations: function (head, operations) {
|
|
self.applyOperations(head, operations);
|
|
},
|
|
selection: function (clientId, selection) {
|
|
if (selection) {
|
|
self.getClientObject(clientId).updateSelection(
|
|
self.transformSelection(Selection.fromJSON(selection))
|
|
);
|
|
} else {
|
|
self.getClientObject(clientId).removeSelection();
|
|
}
|
|
},
|
|
clients: function (clients) {
|
|
var clientId;
|
|
for (clientId in self.clients) {
|
|
if (self.clients.hasOwnProperty(clientId) && !clients.hasOwnProperty(clientId)) {
|
|
self.onClientLeft(clientId);
|
|
}
|
|
}
|
|
|
|
for (clientId in clients) {
|
|
if (clients.hasOwnProperty(clientId)) {
|
|
var clientObject = self.getClientObject(clientId);
|
|
|
|
if (clients[clientId].name) {
|
|
clientObject.setName(clients[clientId].name);
|
|
}
|
|
|
|
var selection = clients[clientId].selection;
|
|
if (selection) {
|
|
self.clients[clientId].updateSelection(
|
|
self.transformSelection(Selection.fromJSON(selection))
|
|
);
|
|
} else {
|
|
self.clients[clientId].removeSelection();
|
|
}
|
|
}
|
|
}
|
|
},
|
|
reconnect: function () { self.serverReconnect(); }
|
|
});
|
|
}
|
|
|
|
inherit(EditorClient, Client);
|
|
|
|
EditorClient.prototype.addClient = function (clientId, clientObj) {
|
|
this.clients[clientId] = new OtherClient(
|
|
clientId,
|
|
this.clientListEl,
|
|
this.editorAdapter,
|
|
clientObj.name || clientId,
|
|
clientObj.color || null,
|
|
clientObj.selection ? Selection.fromJSON(clientObj.selection) : null
|
|
);
|
|
};
|
|
|
|
EditorClient.prototype.initializeClients = function (clients) {
|
|
this.clients = {};
|
|
for (var clientId in clients) {
|
|
if (clients.hasOwnProperty(clientId)) {
|
|
this.addClient(clientId, clients[clientId]);
|
|
}
|
|
}
|
|
};
|
|
|
|
EditorClient.prototype.getClientObject = function (clientId) {
|
|
var client = this.clients[clientId];
|
|
if (client) { return client; }
|
|
return this.clients[clientId] = new OtherClient(
|
|
clientId,
|
|
this.clientListEl,
|
|
this.editorAdapter
|
|
);
|
|
};
|
|
|
|
EditorClient.prototype.onClientLeft = function (clientId) {
|
|
//console.log("User disconnected: " + clientId);
|
|
var client = this.clients[clientId];
|
|
if (!client) { return; }
|
|
client.remove();
|
|
delete this.clients[clientId];
|
|
};
|
|
|
|
EditorClient.prototype.initializeClientList = function () {
|
|
this.clientListEl = document.createElement('ul');
|
|
};
|
|
|
|
EditorClient.prototype.applyUnredo = function (operation) {
|
|
this.undoManager.add(operation.invert(this.editorAdapter.getValue()));
|
|
this.editorAdapter.applyOperation(operation.wrapped);
|
|
this.selection = operation.meta.selectionAfter;
|
|
this.editorAdapter.setSelection(this.selection);
|
|
this.applyClient(operation.wrapped);
|
|
};
|
|
|
|
EditorClient.prototype.undo = function () {
|
|
var self = this;
|
|
if (!this.undoManager.canUndo()) { return; }
|
|
this.undoManager.performUndo(function (o) { self.applyUnredo(o); });
|
|
};
|
|
|
|
EditorClient.prototype.redo = function () {
|
|
var self = this;
|
|
if (!this.undoManager.canRedo()) { return; }
|
|
this.undoManager.performRedo(function (o) { self.applyUnredo(o); });
|
|
};
|
|
|
|
EditorClient.prototype.onChange = function (textOperation, inverse) {
|
|
var selectionBefore = this.selection;
|
|
this.updateSelection();
|
|
var meta = new SelfMeta(selectionBefore, this.selection);
|
|
var operation = new WrappedOperation(textOperation, meta);
|
|
|
|
var compose = this.undoManager.undoStack.length > 0 &&
|
|
inverse.shouldBeComposedWithInverted(last(this.undoManager.undoStack).wrapped);
|
|
var inverseMeta = new SelfMeta(this.selection, selectionBefore);
|
|
this.undoManager.add(new WrappedOperation(inverse, inverseMeta), compose);
|
|
this.applyClient(textOperation);
|
|
};
|
|
|
|
EditorClient.prototype.updateSelection = function () {
|
|
this.selection = this.editorAdapter.getSelection();
|
|
};
|
|
|
|
EditorClient.prototype.onSelectionChange = function () {
|
|
var oldSelection = this.selection;
|
|
this.updateSelection();
|
|
if (oldSelection && this.selection.equals(oldSelection)) { return; }
|
|
this.sendSelection(this.selection);
|
|
};
|
|
|
|
EditorClient.prototype.onBlur = function () {
|
|
this.selection = null;
|
|
this.sendSelection(null);
|
|
};
|
|
|
|
EditorClient.prototype.sendSelection = function (selection) {
|
|
if (this.state instanceof Client.AwaitingWithBuffer) { return; }
|
|
this.serverAdapter.sendSelection(selection);
|
|
};
|
|
|
|
EditorClient.prototype.sendOperation = function (revision, operation) {
|
|
this.serverAdapter.sendOperation(revision, operation.toJSON(), this.selection);
|
|
};
|
|
|
|
EditorClient.prototype.getOperations = function (base, head) {
|
|
this.serverAdapter.getOperations(base, head);
|
|
};
|
|
|
|
EditorClient.prototype.applyOperation = function (operation) {
|
|
this.editorAdapter.applyOperation(operation);
|
|
this.updateSelection();
|
|
this.undoManager.transform(new WrappedOperation(operation, null));
|
|
};
|
|
|
|
function rgb2hex (r, g, b) {
|
|
function digits (n) {
|
|
var m = Math.round(255*n).toString(16);
|
|
return m.length === 1 ? '0'+m : m;
|
|
}
|
|
return '#' + digits(r) + digits(g) + digits(b);
|
|
}
|
|
|
|
function hsl2hex (h, s, l) {
|
|
if (s === 0) { return rgb2hex(l, l, l); }
|
|
var var2 = l < 0.5 ? l * (1+s) : (l+s) - (s*l);
|
|
var var1 = 2 * l - var2;
|
|
var hue2rgb = function (hue) {
|
|
if (hue < 0) { hue += 1; }
|
|
if (hue > 1) { hue -= 1; }
|
|
if (6*hue < 1) { return var1 + (var2-var1)*6*hue; }
|
|
if (2*hue < 1) { return var2; }
|
|
if (3*hue < 2) { return var1 + (var2-var1)*6*(2/3 - hue); }
|
|
return var1;
|
|
};
|
|
return rgb2hex(hue2rgb(h+1/3), hue2rgb(h), hue2rgb(h-1/3));
|
|
}
|
|
|
|
function hueFromName (name) {
|
|
var a = 1;
|
|
for (var i = 0; i < name.length; i++) {
|
|
a = 17 * (a+name.charCodeAt(i)) % 360;
|
|
}
|
|
return a/360;
|
|
}
|
|
|
|
// Set Const.prototype.__proto__ to Super.prototype
|
|
function inherit (Const, Super) {
|
|
function F () {}
|
|
F.prototype = Super.prototype;
|
|
Const.prototype = new F();
|
|
Const.prototype.constructor = Const;
|
|
}
|
|
|
|
function last (arr) { return arr[arr.length - 1]; }
|
|
|
|
// Remove an element from the DOM.
|
|
function removeElement (el) {
|
|
if (el.parentNode) {
|
|
el.parentNode.removeChild(el);
|
|
}
|
|
}
|
|
|
|
return EditorClient;
|
|
}());
|