luci2: add LuCI2.ui.view.repeat() to allow implementing periodic tasks

diff --git a/luci2/htdocs/luci2/luci2.js b/luci2/htdocs/luci2/luci2.js
index 2bf73c82772295b0491a78344aff1c6e545f9cb7..9f402570c869537f5e0b5a84a8a004d155d486fc 100644 (file)
--- a/luci2/htdocs/luci2/luci2.js
+++ b/luci2/htdocs/luci2/luci2.js
@@ -2068,6 +2068,9 @@ function LuCI2()
                {
                        var name = node.view.split(/\//).join('.');
 
+                       if (_luci2.globals.currentView)
+                               _luci2.globals.currentView.finish();
+
                        _luci2.ui.renderViewMenu();
 
                        if (!_luci2._views)
@@ -2076,7 +2079,10 @@ function LuCI2()
                        _luci2.setHash('view', node.view);
 
                        if (_luci2._views[name] instanceof _luci2.ui.view)
+                       {
+                               _luci2.globals.currentView = _luci2._views[name];
                                return _luci2._views[name].render();
+                       }
 
                        var url = _luci2.globals.resource + '/view/' + name + '.js';
 
@@ -2100,6 +2106,7 @@ function LuCI2()
                                                acls: node.write || { }
                                        });
 
+                                       _luci2.globals.currentView = _luci2._views[name];
                                        return _luci2._views[name].render();
                                }
                                catch(e) {
@@ -2280,6 +2287,42 @@ function LuCI2()
                        return this._fetch_template().then(function() {
                                return _luci2.deferrable(self.execute());
                        });
+               },
+
+               repeat: function(func, interval)
+               {
+                       var self = this;
+
+                       if (!self._timeouts)
+                               self._timeouts = [ ];
+
+                       var index = self._timeouts.length;
+
+                       if (typeof(interval) != 'number')
+                               interval = 5000;
+
+                       var setTimer, runTimer;
+
+                       setTimer = function() {
+                               self._timeouts[index] = window.setTimeout(runTimer, interval);
+                       };
+
+                       runTimer = function() {
+                               _luci2.deferrable(func.call(self)).then(setTimer);
+                       };
+
+                       runTimer();
+               },
+
+               finish: function()
+               {
+                       if ($.isArray(this._timeouts))
+                       {
+                               for (var i = 0; i < this._timeouts.length; i++)
+                                       window.clearTimeout(this._timeouts[i]);
+
+                               delete this._timeouts;
+                       }
                }
        });