https://ebible.org/study/js/common/navigation.js

1/* temporarily stores locations when settings are changed */
2var PlaceKeeper = (function() {
3
4	var currentWindow = null,
5		currentData = null;
6
7	function storePlace() {
8		currentData = getFirstLocation();
9	}
10
11	function getFirstLocation() {
12		currentWindow = (sofia.app.windowManager) ?
13							sofia.app.windowManager.getWindows().filter(function(w) { return w.className == 'BibleWindow'})[0] :
14							null;
15
16		var data = (currentWindow != null) ? currentWindow.getData() : null;
17
18		return data;
19	}
20
21	function restorePlace() {
22		if (currentWindow != null) {
23			//
24			//firstWindow.trigger('message', {type:'globalmessage', messagetype: 'nav', })
25
26			currentWindow.trigger('globalmessage', {
27				type: 'globalmessage',
28				target: currentWindow,
29				data: {
30					messagetype: 'nav',
31					type: 'bible',
32					locationInfo: currentData // firstWindow.getData()
33				}
34			});
35		}
36
37	}
38
39	return {
40		storePlace: storePlace,
41		restorePlace: restorePlace,
42		getFirstLocation: getFirstLocation
43	}
44
45})();
46
47/* stores locations for back/foward buttons on browser */
48var TextNavigation = (function() {
49
50	var locations = [],
51		locationIndex = -1;
52
53	$(window).on('popstate',  handleBrowserNavigation);
54
55	function handleBrowserNavigation(e) {
56		console.log('handleNavigation', e, e.state);
57
58		if (e.originalEvent && e.originalEvent.state != null && typeof e.originalEvent.state.locationid != 'undefined') {
59
60			var newlocationid =  e.originalEvent.state.locationid,
61				type = '';
62
63
64			if (locationIndex-1 > -1 && locations[locationIndex-1] == newlocationid) {
65				locationIndex--;
66				type = 'back';
67			} else if (locationIndex+1 < locations.length && locations[locationIndex+1] == newlocationid) {
68				locationIndex++;
69				type = 'forward';
70			}
71
72			setLocation(newlocationid);
73
74			textNavigation.trigger('locationchange', {type: type});
75		}
76
77	}
78
79
80	// upon startup, store the first place
81	function firstState(locationid) {
82		console.log('firststate',locationid);
83
84		locations.push(locationid);
85		locationIndex = 0;
86
87		window.history.replaceState({"locationid": locationid}, null, window.location.href);
88	}
89
90	// each additional change
91	function locationChange(locationid, type) {
92
93		// slice off anything after this one
94		while (locationIndex > locations.length-1) {
95			locations.pop();
96		}
97
98		locations.push(locationid);
99		locationIndex++;
100
101		window.history.pushState({"locationid": locationid}, null, window.location.href);
102
103
104		textNavigation.trigger('locationchange', {type: type});
105	}
106
107
108	function setLocation(locationid) {
109		// break off and be sure to add the trailing verse 1 (JN1_1)
110		var fragmentid = locationid.indexOf('_') > -1 ? locationid : locationid + '_1',
111			sectionid = fragmentid.split('_')[0];
112
113		sofia.app.handleGlobalMessage({
114			type: 'globalmessage',
115			target: this,
116			data: {
117				messagetype:'nav',
118				type: 'bible',
119				locationInfo: {
120					fragmentid: fragmentid,
121					sectionid: sectionid,
122					offset: 0
123				}
124			}
125		});
126	}
127
128	function back() {
129
130		window.history.go(-1);
131
132		/*
133		if (locationIndex > 0) {
134			locationIndex--;
135			var locationid = locations[locationIndex];
136			setLocation(locationid);
137		}
138		*/
139	}
140
141	function forward() {
142
143		window.history.go(1);
144
145
146		/*
147		if (locationIndex < locations.length-1) {
148			// get this location
149			locationIndex++;
150			var locationid = locations[locationIndex];
151			setLocation(locationid);
152		}
153		*/
154	}
155
156	function getLocations() {
157		return locations;
158	}
159
160	function getLocationIndex() {
161		return locationIndex;
162	}
163
164
165	var textNavigation =  {
166		locationChange: locationChange,
167		firstState: firstState,
168		forward: forward,
169		back: back,
170		getLocationIndex: getLocationIndex,
171		getLocations: getLocations
172	}
173
174	textNavigation = $.extend(true, textNavigation, EventEmitter);
175
176	return textNavigation;
177})();