Open File: Add filter example

demos/Open File/main.blp

@@ -19,6 +19,16 @@ Adw.StatusPage {
       ]
     }
 
+    Button button_image {
+      halign: center;
+      label: _("Open Image");
+
+      styles [
+        "pill",
+        "suggested-action"
+      ]
+    }
+
     Button button_multiple {
       halign: center;
       label: _("Open multiple files");
@@ -35,3 +45,4 @@ Adw.StatusPage {
     }
   }
 }
+

demos/Open File/main.js

@@ -9,6 +9,7 @@ Gio._promisify(
 );
 
 const button_single = workbench.builder.get_object("button_single");
+const button_image = workbench.builder.get_object("button_image");
 const button_multiple = workbench.builder.get_object("button_multiple");
 
 async function openFile() {
@@ -22,6 +23,24 @@ async function openFile() {
   console.log(`Selected File: ${info.get_name()}`);
 }
 
+async function openImageFile() {
+  const filters = new Gio.ListStore();
+
+  const imageFilter = Gtk.FileFilter.new();
+  imageFilter.set_name("Image File");
+  imageFilter.add_mime_type("image/*");
+  filters.append(imageFilter);
+
+  const fileDialog = new Gtk.FileDialog({ filters });
+  const file = await fileDialog.open(workbench.window, null);
+  const info = file.query_info(
+    "standard::name",
+    Gio.FileQueryInfoFlags.NONE,
+    null,
+  );
+  console.log(`Selected file: ${info.get_name()}`);
+}
+
 async function openMultipleFiles() {
   const dialog_for_multiple_files = new Gtk.FileDialog();
   const files = await dialog_for_multiple_files.open_multiple(
@@ -36,6 +55,11 @@ button_single.connect("clicked", () => {
   openFile().catch(console.error);
 });
 
+button_image.connect("clicked", () => {
+  openImageFile().catch(console.error);
+});
+
 button_multiple.connect("clicked", () => {
   openMultipleFiles().catch(console.error);
 });
+

demos/Open File/main.py

@@ -5,8 +5,15 @@
 import workbench
 
 button_single = workbench.builder.get_object("button_single")
+button_image = workbench.builder.get_object("button_image")
 button_multiple = workbench.builder.get_object("button_multiple")
 
+image_filter = Gtk.FileFilter(name="Images")
+image_filter.add_mime_type("image/*")
+file_dialog = Gtk.FileDialog(
+    default_filter=image_filter,
+)
+
 
 def on_file_opened(dialog, result):
     file = dialog.open_finish(result)
@@ -23,6 +30,18 @@ def open_file():
     dialog_for_file.open(workbench.window, None, on_file_opened)
 
 
+def on_image_opened(dialog, result):
+    file = file_dialog.open_finish(result)
+    info = file.query_info("standard::name", Gio.FileQueryInfoFlags.NONE, None)
+
+    print(f"Selected File: {info.get_name()}")
+
+
+def open_image():
+    dialog_for_image = file_dialog
+    dialog_for_image.open(workbench.window, None, on_image_opened)
+
+
 def on_multiple_files_opened(dialog, result):
     files = dialog.open_multiple_finish(result)
     selected_items_count = files.get_n_items()
@@ -37,4 +56,5 @@ def open_multiple_files():
 
 
 button_single.connect("clicked", lambda *_: open_file())
+button_image.connect("clicked", lambda *_: open_image())
 button_multiple.connect("clicked", lambda *_: open_multiple_files())

demos/Open File/main.vala

@@ -2,9 +2,11 @@
 
 public void main () {
     var button_single = (Gtk.Button) workbench.builder.get_object ("button_single");
+    var button_image = (Gtk.Button) workbench.builder.get_object ("button_image");
     var button_multiple = (Gtk.Button) workbench.builder.get_object ("button_multiple");
 
     button_single.clicked.connect (open_single.begin);
+    button_image.clicked.connect (open_image.begin);
     button_multiple.clicked.connect (open_multiple.begin);
 }
 
@@ -23,6 +25,25 @@ private async void open_single () {
     }
 }
 
+private async void open_image () {
+    var image_filter = new Gtk.FileFilter ();
+
+    image_filter.add_mime_type ("image/*");
+
+    var file_dialog = new Gtk.FileDialog () {
+        default_filter = image_filter
+    };
+
+    try {
+        File file = yield file_dialog.open (workbench.window, null);
+
+        FileInfo info = file.query_info ("standard::name", NONE, null);
+        message (@"Selected file: $(info.get_name ())");
+    } catch (Error e) {
+        critical (e.message);
+    }
+}
+
 private async void open_multiple () {
     var file_dialog = new Gtk.FileDialog ();
     try {
@@ -33,3 +54,4 @@ private async void open_multiple () {
         critical (e.message);
     }
 }
+