1 files changed, 132 insertions, 0 deletions
diff --git a/widget/gtk/nsApplicationChooser.cpp b/widget/gtk/nsApplicationChooser.cpp
new file mode 100644
index 0000000000..6752c52caf
--- /dev/null
+++ b/widget/gtk/nsApplicationChooser.cpp
@@ -0,0 +1,132 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Types.h"
+
+#include <gtk/gtk.h>
+
+#include "nsApplicationChooser.h"
+#include "WidgetUtils.h"
+#include "nsIMIMEInfo.h"
+#include "nsIWidget.h"
+#include "nsIFile.h"
+#include "nsCExternalHandlerService.h"
+#include "nsComponentManagerUtils.h"
+#include "nsGtkUtils.h"
+#include "nsPIDOMWindow.h"
+
+using namespace mozilla;
+
+NS_IMPL_ISUPPORTS(nsApplicationChooser, nsIApplicationChooser)
+
+nsApplicationChooser::nsApplicationChooser() = default;
+
+nsApplicationChooser::~nsApplicationChooser() = default;
+
+NS_IMETHODIMP
+nsApplicationChooser::Init(mozIDOMWindowProxy* aParent,
+                           const nsACString& aTitle) {
+  NS_ENSURE_TRUE(aParent, NS_ERROR_FAILURE);
+  auto* parent = nsPIDOMWindowOuter::From(aParent);
+  mParentWidget = widget::WidgetUtils::DOMWindowToWidget(parent);
+  mWindowTitle.Assign(aTitle);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsApplicationChooser::Open(const nsACString& aContentType,
+                           nsIApplicationChooserFinishedCallback* aCallback) {
+  MOZ_ASSERT(aCallback);
+  if (mCallback) {
+    NS_WARNING("Chooser is already in progress.");
+    return NS_ERROR_ALREADY_INITIALIZED;
+  }
+  mCallback = aCallback;
+  NS_ENSURE_TRUE(mParentWidget, NS_ERROR_FAILURE);
+  GtkWindow* parent_widget =
+      GTK_WINDOW(mParentWidget->GetNativeData(NS_NATIVE_SHELLWIDGET));
+
+  GtkWidget* chooser = gtk_app_chooser_dialog_new_for_content_type(
+      parent_widget,
+      (GtkDialogFlags)(GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT),
+      PromiseFlatCString(aContentType).get());
+  gtk_app_chooser_dialog_set_heading(GTK_APP_CHOOSER_DIALOG(chooser),
+                                     mWindowTitle.BeginReading());
+  NS_ADDREF_THIS();
+  g_signal_connect(chooser, "response", G_CALLBACK(OnResponse), this);
+  g_signal_connect(chooser, "destroy", G_CALLBACK(OnDestroy), this);
+  gtk_widget_show(chooser);
+  return NS_OK;
+}
+
+/* static */
+void nsApplicationChooser::OnResponse(GtkWidget* chooser, gint response_id,
+                                      gpointer user_data) {
+  static_cast<nsApplicationChooser*>(user_data)->Done(chooser, response_id);
+}
+
+/* static */
+void nsApplicationChooser::OnDestroy(GtkWidget* chooser, gpointer user_data) {
+  static_cast<nsApplicationChooser*>(user_data)->Done(chooser,
+                                                      GTK_RESPONSE_CANCEL);
+}
+
+void nsApplicationChooser::Done(GtkWidget* chooser, gint response) {
+  nsCOMPtr<nsILocalHandlerApp> localHandler;
+  nsresult rv;
+  switch (response) {
+    case GTK_RESPONSE_OK:
+    case GTK_RESPONSE_ACCEPT: {
+      localHandler = do_CreateInstance(NS_LOCALHANDLERAPP_CONTRACTID, &rv);
+      if (NS_FAILED(rv)) {
+        NS_WARNING("Out of memory.");
+        break;
+      }
+      GAppInfo* app_info =
+          gtk_app_chooser_get_app_info(GTK_APP_CHOOSER(chooser));
+
+      nsCOMPtr<nsIFile> localExecutable;
+      gchar* fileWithFullPath =
+          g_find_program_in_path(g_app_info_get_executable(app_info));
+      if (!fileWithFullPath) {
+        g_object_unref(app_info);
+        NS_WARNING("Cannot find program in path.");
+        break;
+      }
+      rv = NS_NewNativeLocalFile(nsDependentCString(fileWithFullPath), false,
+                                 getter_AddRefs(localExecutable));
+      g_free(fileWithFullPath);
+      if (NS_FAILED(rv)) {
+        NS_WARNING("Cannot create local filename.");
+        localHandler = nullptr;
+      } else {
+        localHandler->SetExecutable(localExecutable);
+        localHandler->SetName(
+            NS_ConvertUTF8toUTF16(g_app_info_get_display_name(app_info)));
+      }
+      g_object_unref(app_info);
+    }
+
+    break;
+    case GTK_RESPONSE_CANCEL:
+    case GTK_RESPONSE_CLOSE:
+    case GTK_RESPONSE_DELETE_EVENT:
+      break;
+    default:
+      NS_WARNING("Unexpected response");
+      break;
+  }
+
+  // A "response" signal won't be sent again but "destroy" will be.
+  g_signal_handlers_disconnect_by_func(chooser, FuncToGpointer(OnDestroy),
+                                       this);
+  gtk_widget_destroy(chooser);
+
+  if (mCallback) {
+    mCallback->Done(localHandler);
+    mCallback = nullptr;
+  }
+  NS_RELEASE_THIS();
+}