1 files changed, 131 insertions, 0 deletions
diff --git a/sources/ext/dhtmlxscheduler_collision.js b/sources/ext/dhtmlxscheduler_collision.js
new file mode 100644
index 0000000..13bd178
--- /dev/null
+++ b/sources/ext/dhtmlxscheduler_collision.js
@@ -0,0 +1,131 @@
+/*
+This software is allowed to use under GPL or you need to obtain Commercial or Enterise License
+to use it in non-GPL project. Please contact sales@dhtmlx.com for details
+*/
+(function(){
+
+var temp_section;
+var before;
+
+scheduler.config.collision_limit = 1;	
+
+function _setTempSection(event_id) { // for custom views (matrix, timeline, units)
+	var pr = scheduler._props?scheduler._props[scheduler._mode]:null;
+	var matrix = scheduler.matrix?scheduler.matrix[scheduler._mode]:null;
+	var checked_mode = pr||matrix; // units or matrix mode
+	if(pr)
+		var map_to = checked_mode.map_to;
+	if(matrix)
+		var map_to = checked_mode.y_property;
+	if ((checked_mode) && event_id){
+		temp_section = scheduler.getEvent(event_id)[map_to];
+	}	
+}
+
+scheduler.attachEvent("onBeforeDrag",function(id){
+	_setTempSection(id); 
+	return true;
+});
+scheduler.attachEvent("onBeforeLightbox",function(id){
+	var ev = scheduler.getEvent(id);
+	before = [ev.start_date, ev.end_date];
+	_setTempSection(id);
+	return true;
+});
+scheduler.attachEvent("onEventChanged",function(id){
+	if (!id) return true;
+	var ev = scheduler.getEvent(id);
+	if (!scheduler.checkCollision(ev)){
+		if (!before) return false;
+		ev.start_date = before[0];
+		ev.end_date = before[1];
+		ev._timed=this.isOneDayEvent(ev);
+	}
+	return true;
+});
+scheduler.attachEvent("onBeforeEventChanged",function(ev,e,is_new){
+	return scheduler.checkCollision(ev);
+});
+scheduler.attachEvent("onEventAdded",function(id,ev) {
+	var result = scheduler.checkCollision(ev);
+	if (!result)
+		scheduler.deleteEvent(id);
+});
+scheduler.attachEvent("onEventSave",function(id, edited_ev, is_new){
+	edited_ev = scheduler._lame_clone(edited_ev);
+	edited_ev.id = id;
+
+	//lightbox may not have 'time' section
+	if(!(edited_ev.start_date && edited_ev.end_date)){
+		var ev = scheduler.getEvent(id);
+		edited_ev.start_date = new Date(ev.start_date);
+		edited_ev.end_date = new Date(ev.end_date);
+	}
+
+	if(edited_ev.rec_type){
+		scheduler._roll_back_dates(edited_ev);
+	}
+	return scheduler.checkCollision(edited_ev); // in case user creates event on one date but then edited it another
+});
+
+scheduler.checkCollision = function(ev) {
+	var evs = [];
+	var collision_limit = scheduler.config.collision_limit;
+	if (ev.rec_type) {
+		var evs_dates = scheduler.getRecDates(ev);
+		for(var k=0; k<evs_dates.length; k++) {
+			var tevs = scheduler.getEvents(evs_dates[k].start_date, evs_dates[k].end_date);
+			for(var j=0; j<tevs.length; j++) { 
+				if ((tevs[j].event_pid || tevs[j].id) != ev.id )
+					evs.push(tevs[j]);
+			}
+		}
+	} else {
+		evs = scheduler.getEvents(ev.start_date, ev.end_date);
+		for (var i=0; i<evs.length; i++) {
+			if (evs[i].id == ev.id) {
+				evs.splice(i,1);
+				break;
+			}
+		}
+	}
+	
+	var pr = scheduler._props?scheduler._props[scheduler._mode]:null;
+	var matrix = scheduler.matrix?scheduler.matrix[scheduler._mode]:null;
+	
+	var checked_mode = pr||matrix;
+	if(pr)
+		var map_to = checked_mode.map_to;
+	if(matrix)
+		var map_to = checked_mode.y_property;
+	
+	var single = true;
+	if (checked_mode) { // custom view
+		var count = 0;
+
+		for (var i = 0; i < evs.length; i++)
+
+			if (evs[i][map_to] == ev[map_to] && evs[i].id != ev.id)
+				count++;
+				
+		if (count >= collision_limit) {
+
+			single = false;
+		}
+	}
+	else {
+		if ( evs.length >= collision_limit )
+			single = false;
+	}
+	if (!single) {
+		var res = !scheduler.callEvent("onEventCollision",[ev,evs]);
+		if (!res) {
+			ev[map_to] = temp_section||ev[map_to]; // from _setTempSection for custom views
+		}
+		return res;
+	}
+	return single;
+	
+}
+
+})();