1 /* 2 * This file is part of gtkD. 3 * 4 * gtkD is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU Lesser General Public License 6 * as published by the Free Software Foundation; either version 3 7 * of the License, or (at your option) any later version, with 8 * some exceptions, please read the COPYING file. 9 * 10 * gtkD is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public License 16 * along with gtkD; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA 18 */ 19 20 // generated automatically - do not change 21 // find conversion definition on APILookup.txt 22 // implement new conversion functionalities on the wrap.utils pakage 23 24 25 module gio.AppInfoMonitor; 26 27 private import gobject.ObjectG; 28 private import gobject.Signals; 29 private import gtkc.gio; 30 public import gtkc.giotypes; 31 private import std.algorithm; 32 33 34 /** 35 * #GAppInfoMonitor is a very simple object used for monitoring the app 36 * info database for changes (ie: newly installed or removed 37 * applications). 38 * 39 * Call g_app_info_monitor_get() to get a #GAppInfoMonitor and connect 40 * to the "changed" signal. 41 * 42 * In the usual case, applications should try to make note of the change 43 * (doing things like invalidating caches) but not act on it. In 44 * particular, applications should avoid making calls to #GAppInfo APIs 45 * in response to the change signal, deferring these until the time that 46 * the data is actually required. The exception to this case is when 47 * application information is actually being displayed on the screen 48 * (eg: during a search or when the list of all applications is shown). 49 * The reason for this is that changes to the list of installed 50 * applications often come in groups (like during system updates) and 51 * rescanning the list on every change is pointless and expensive. 52 * 53 * Since: 2.40 54 */ 55 public class AppInfoMonitor : ObjectG 56 { 57 /** the main Gtk struct */ 58 protected GAppInfoMonitor* gAppInfoMonitor; 59 60 /** Get the main Gtk struct */ 61 public GAppInfoMonitor* getAppInfoMonitorStruct() 62 { 63 return gAppInfoMonitor; 64 } 65 66 /** the main Gtk struct as a void* */ 67 protected override void* getStruct() 68 { 69 return cast(void*)gAppInfoMonitor; 70 } 71 72 protected override void setStruct(GObject* obj) 73 { 74 gAppInfoMonitor = cast(GAppInfoMonitor*)obj; 75 super.setStruct(obj); 76 } 77 78 /** 79 * Sets our main struct and passes it to the parent class. 80 */ 81 public this (GAppInfoMonitor* gAppInfoMonitor, bool ownedRef = false) 82 { 83 this.gAppInfoMonitor = gAppInfoMonitor; 84 super(cast(GObject*)gAppInfoMonitor, ownedRef); 85 } 86 87 88 /** */ 89 public static GType getType() 90 { 91 return g_app_info_monitor_get_type(); 92 } 93 94 /** 95 * Gets the #GAppInfoMonitor for the current thread-default main 96 * context. 97 * 98 * The #GAppInfoMonitor will emit a "changed" signal in the 99 * thread-default main context whenever the list of installed 100 * applications (as reported by g_app_info_get_all()) may have changed. 101 * 102 * You must only call g_object_unref() on the return value from under 103 * the same main context as you created it. 104 * 105 * Returns: a reference to a #GAppInfoMonitor 106 * 107 * Since: 2.40 108 */ 109 public static AppInfoMonitor get() 110 { 111 auto p = g_app_info_monitor_get(); 112 113 if(p is null) 114 { 115 return null; 116 } 117 118 return ObjectG.getDObject!(AppInfoMonitor)(cast(GAppInfoMonitor*) p, true); 119 } 120 121 protected class OnChangedDelegateWrapper 122 { 123 static OnChangedDelegateWrapper[] listeners; 124 void delegate(AppInfoMonitor) dlg; 125 gulong handlerId; 126 127 this(void delegate(AppInfoMonitor) dlg) 128 { 129 this.dlg = dlg; 130 this.listeners ~= this; 131 } 132 133 void remove(OnChangedDelegateWrapper source) 134 { 135 foreach(index, wrapper; listeners) 136 { 137 if (wrapper.handlerId == source.handlerId) 138 { 139 listeners[index] = null; 140 listeners = std.algorithm.remove(listeners, index); 141 break; 142 } 143 } 144 } 145 } 146 147 /** 148 * Signal emitted when the app info database for changes (ie: newly installed 149 * or removed applications). 150 */ 151 gulong addOnChanged(void delegate(AppInfoMonitor) dlg, ConnectFlags connectFlags=cast(ConnectFlags)0) 152 { 153 auto wrapper = new OnChangedDelegateWrapper(dlg); 154 wrapper.handlerId = Signals.connectData( 155 this, 156 "changed", 157 cast(GCallback)&callBackChanged, 158 cast(void*)wrapper, 159 cast(GClosureNotify)&callBackChangedDestroy, 160 connectFlags); 161 return wrapper.handlerId; 162 } 163 164 extern(C) static void callBackChanged(GAppInfoMonitor* appinfomonitorStruct, OnChangedDelegateWrapper wrapper) 165 { 166 wrapper.dlg(wrapper.outer); 167 } 168 169 extern(C) static void callBackChangedDestroy(OnChangedDelegateWrapper wrapper, GClosure* closure) 170 { 171 wrapper.remove(wrapper); 172 } 173 }