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/*
This file is part of rhizi, a collaborative knowledge graph editor.
Copyright (C) 2014-2015 Rhizi
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
"use strict"
// Once upon a time we shall have a versioned property graph from which history
// will be one extractable aspect, much like a git for graphs. Now we just have
// a plain list of events for a specific user.
// Enums and chrome don't play along well. Object.freeze I guess? actually rhizi code cuases
// exceptions but that shouldn't break the console, as evidenced by the '__commandLineAPI is not defined'
// error below.
//
// Uncaught TypeError: Can't add property addednodes, object is not extensible rz_core.js:4
// Uncaught TypeError: Can't add property text, object is not extensible textanalysis.js:3
// Uncaught TypeError: Can't add property key, object is not extensible buttons.js:5
// Uncaught ReferenceError: sentence is not defined robot.js:11
// Resource interpreted as Font but transferred with MIME type application/font-sfnt: "http://localhost:8000/external/Lato300.ttf". jquery.js:2
// > document
// ReferenceError: __commandLineAPI is not defined
//var ActionEnum = Enum();
define(['jquery', 'FileSaver', 'consts', 'rz_bus'],
function($, saveAs, consts, rz_bus) {
/* user - username (string)
* svg - svg element for catching zoom events (jquery DOMNode wrapper)
*/
function History(user, graph, transform_element) {
var that = this;
this.records = [];
this.user = user;
this.transform_element = transform_element;
graph.diffBus.onValue(function (obj) {
return that.record_graph_diff(obj)
});
rz_bus.ui_key.onValue(that.record_keystrokes.bind(that));
rz_bus.ui_input.onValue(that.record_input.bind(that));
// XXX create zoom behavior - then proof to event name change
$(window).on('wheel.history', function(obj) {
that.record_zoom(obj);
return true;
});
}
var ACTION_KEYSTROKES = 'ACTION_KEYSTROKES';
var ACTION_INPUT = 'ACTION_INPUT';
var ACTION_GRAPH_DIFF = 'ACTION_GRAPH_DIFF';
var ACTION_ZOOM = 'ACTION_ZOOM';
var KEYSTROKE_WHERE_TEXTANALYSIS = 'KEYSTROKE_WHERE_TEXTANALYSIS';
var KEYSTROKE_WHERE_DOCUMENT = 'KEYSTROKE_WHERE_DOCUMENT';
var KEYSTROKE_WHERE_EDIT_NODE = 'KEYSTROKE_WHERE_EDIT_NODE';
History.prototype.record = function(action, d)
{
if (d === undefined || action === undefined) {
throw "Invalid arguments";
}
d['action'] = action;
d['user'] = this.user;
d['timestamp'] = new Date();
this.records.push(d);
$('.history-timeline').html('<pre>' + JSON.stringify(d) + '</pre>');
};
function svg_extract_translate_and_scale(e)
{
// See: http://stackoverflow.com/questions/10349811/how-to-manipulate-translate-transforms-on-a-svg-element-with-javascript-in-chrom
// Using the regexp option right now, did only firefox testing 36
var transform = e.attributes['transform'];
if (undefined === transform) {
return;
}
var str = transform.value,
parts = /translate\(\s*([^\s,)]+)[ ,]([^\s,)]+)/.exec(str),
scale = /scale\(\s*([^\s)]+)\)/.exec(str);
if (scale) {
var x = parts[1], y = parts[2];
return {scale:+scale[1], translate: [+x, +y]};
} else {
return {scale:1.0, translate: [0.0, 0.0]};
}
}
History.prototype.record_zoom = function(d)
{
if (this.transform_element === undefined) {
// FIXME why is it undefined? set in constructor above
return;
}
var transform = svg_extract_translate_and_scale(this.transform_element);
if (transform === undefined) {
//console.log('record_zoom: bug: transform_element has no transform attribute');
//FIXME: broken for now, don't spam console
return;
}
this.record(ACTION_ZOOM, {transform: transform});
}
History.prototype.save_to_file = function()
{
var json = JSON.stringify(this.records, function (k, v) { return v; }, 2);
saveAs(new Blob([json], {type: 'application/json'}), 'history.json');
};
History.prototype.clear = function()
{
this.records = [];
}
History.prototype.record_graph_diff = function(obj)
{
this.record(ACTION_GRAPH_DIFF, {
nodes: {add: obj.nodes && obj.nodes.add, remove: obj.nodes && obj.nodes.remove,
change: obj.nodes && obj.nodes.change},
links: {add: obj.links && obj.links.add, remove: obj.links && obj.links.remove,
change: obj.links && obj.links.change},
});
}
History.prototype.record_keystrokes = function(obj)
{
var where = obj.where,
keys = obj.keys;
if (where === undefined || keys === undefined || keys.length === undefined ||
keys.length <= 0) {
console.log("invalid arguments");
return;
}
keys = keys.filter(function(k) { return k !== undefined; });
if (keys.length == 0) {
return;
}
this.record(ACTION_KEYSTROKES, {
keys: keys,
where: where
});
}
History.prototype.record_input = function(obj)
{
var where = obj.where,
input = obj.input;
if (where === undefined || input === undefined || input.length === undefined || typeof input !== 'string') {
console.log('invalid arguments');
return;
}
this.record(ACTION_INPUT, {where: where, input: input});
}
return {
History:History,
KEYSTROKE_WHERE_TEXTANALYSIS:KEYSTROKE_WHERE_TEXTANALYSIS,
KEYSTROKE_WHERE_DOCUMENT:KEYSTROKE_WHERE_DOCUMENT,
KEYSTROKE_WHERE_EDIT_NODE:KEYSTROKE_WHERE_EDIT_NODE
};
}); // define
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