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(bool transferOwnership = false) 62 { 63 if (transferOwnership) 64 ownedRef = false; 65 return gAppInfoMonitor; 66 } 67 68 /** the main Gtk struct as a void* */ 69 protected override void* getStruct() 70 { 71 return cast(void*)gAppInfoMonitor; 72 } 73 74 protected override void setStruct(GObject* obj) 75 { 76 gAppInfoMonitor = cast(GAppInfoMonitor*)obj; 77 super.setStruct(obj); 78 } 79 80 /** 81 * Sets our main struct and passes it to the parent class. 82 */ 83 public this (GAppInfoMonitor* gAppInfoMonitor, bool ownedRef = false) 84 { 85 this.gAppInfoMonitor = gAppInfoMonitor; 86 super(cast(GObject*)gAppInfoMonitor, ownedRef); 87 } 88 89 90 /** */ 91 public static GType getType() 92 { 93 return g_app_info_monitor_get_type(); 94 } 95 96 /** 97 * Gets the #GAppInfoMonitor for the current thread-default main 98 * context. 99 * 100 * The #GAppInfoMonitor will emit a "changed" signal in the 101 * thread-default main context whenever the list of installed 102 * applications (as reported by g_app_info_get_all()) may have changed. 103 * 104 * You must only call g_object_unref() on the return value from under 105 * the same main context as you created it. 106 * 107 * Returns: a reference to a #GAppInfoMonitor 108 * 109 * Since: 2.40 110 */ 111 public static AppInfoMonitor get() 112 { 113 auto p = g_app_info_monitor_get(); 114 115 if(p is null) 116 { 117 return null; 118 } 119 120 return ObjectG.getDObject!(AppInfoMonitor)(cast(GAppInfoMonitor*) p, true); 121 } 122 123 protected class OnChangedDelegateWrapper 124 { 125 void delegate(AppInfoMonitor) dlg; 126 gulong handlerId; 127 128 this(void delegate(AppInfoMonitor) dlg) 129 { 130 this.dlg = dlg; 131 onChangedListeners ~= this; 132 } 133 134 void remove(OnChangedDelegateWrapper source) 135 { 136 foreach(index, wrapper; onChangedListeners) 137 { 138 if (wrapper.handlerId == source.handlerId) 139 { 140 onChangedListeners[index] = null; 141 onChangedListeners = std.algorithm.remove(onChangedListeners, index); 142 break; 143 } 144 } 145 } 146 } 147 OnChangedDelegateWrapper[] onChangedListeners; 148 149 /** 150 * Signal emitted when the app info database for changes (ie: newly installed 151 * or removed applications). 152 */ 153 gulong addOnChanged(void delegate(AppInfoMonitor) dlg, ConnectFlags connectFlags=cast(ConnectFlags)0) 154 { 155 auto wrapper = new OnChangedDelegateWrapper(dlg); 156 wrapper.handlerId = Signals.connectData( 157 this, 158 "changed", 159 cast(GCallback)&callBackChanged, 160 cast(void*)wrapper, 161 cast(GClosureNotify)&callBackChangedDestroy, 162 connectFlags); 163 return wrapper.handlerId; 164 } 165 166 extern(C) static void callBackChanged(GAppInfoMonitor* appinfomonitorStruct, OnChangedDelegateWrapper wrapper) 167 { 168 wrapper.dlg(wrapper.outer); 169 } 170 171 extern(C) static void callBackChangedDestroy(OnChangedDelegateWrapper wrapper, GClosure* closure) 172 { 173 wrapper.remove(wrapper); 174 } 175 }