Add a Select sub menu with 5 options to select pages

data/menu.ui

@@ -114,6 +114,36 @@ along with PDF-Arranger.  If not, see <http://www.gnu.org/licenses/>.
         </item>
       </section>
     </submenu>
+    <submenu>
+      <attribute name="label" translatable="yes">_Select</attribute>
+      <section>
+        <item>
+          <attribute name="label" translatable="yes">Select _All</attribute>
+          <attribute name="action">win.select</attribute>
+          <attribute name="target" type="i">0</attribute>
+        </item>
+        <item>
+          <attribute name="label" translatable="yes">_Deselect All</attribute>
+          <attribute name="action">win.select</attribute>
+          <attribute name="target" type="i">1</attribute>
+        </item>
+        <item>
+          <attribute name="label" translatable="yes">Select _Odd Pages</attribute>
+          <attribute name="action">win.select</attribute>
+          <attribute name="target" type="i">2</attribute>
+        </item>
+        <item>
+          <attribute name="label" translatable="yes">Select _Even Pages</attribute>
+          <attribute name="action">win.select</attribute>
+          <attribute name="target" type="i">3</attribute>
+        </item>
+        <item>
+          <attribute name="label" translatable="yes">_Invert Selection</attribute>
+          <attribute name="action">win.select</attribute>
+          <attribute name="target" type="i">4</attribute>
+        </item>
+      </section>
+    </submenu>
     <section>
       <item>
         <attribute name="label" translatable="yes">Zoom _In</attribute>
@@ -185,6 +215,38 @@ along with PDF-Arranger.  If not, see <http://www.gnu.org/licenses/>.
         </section>
       </submenu>
     </section>
+    <section>
+      <submenu>
+        <attribute name="label" translatable="yes">_Select</attribute>
+        <section>
+          <item>
+            <attribute name="label" translatable="yes">Select _All</attribute>
+            <attribute name="action">win.select</attribute>
+            <attribute name="target" type="i">0</attribute>
+          </item>
+          <item>
+            <attribute name="label" translatable="yes">_Deselect All</attribute>
+            <attribute name="action">win.select</attribute>
+            <attribute name="target" type="i">1</attribute>
+          </item>
+          <item>
+            <attribute name="label" translatable="yes">Select _Odd Pages</attribute>
+            <attribute name="action">win.select</attribute>
+            <attribute name="target" type="i">2</attribute>
+          </item>
+          <item>
+            <attribute name="label" translatable="yes">Select _Even Pages</attribute>
+            <attribute name="action">win.select</attribute>
+            <attribute name="target" type="i">3</attribute>
+          </item>
+          <item>
+            <attribute name="label" translatable="yes">_Invert Selection</attribute>
+            <attribute name="action">win.select</attribute>
+            <attribute name="target" type="i">4</attribute>
+          </item>
+        </section>
+      </submenu>
+    </section>
     <section>
       <item>
         <attribute name="label" translatable="yes">Rotate _Left</attribute>

pdfarranger/pdfarranger.py

@@ -349,6 +349,7 @@ def __create_actions(self):
             ('cut', self.on_action_cut),
             ('copy', self.on_action_copy),
             ('paste', self.on_action_paste, 'i'),
+            ('select', self.on_action_select, 'i'),
             ('about', self.about_dialog),
         ])
 
@@ -373,6 +374,8 @@ def __create_actions(self):
             ('copy', '<Ctrl>c'),
             ('paste(0)', '<Ctrl>v'),
             ('paste(1)', '<Ctrl><Shift>v'),
+            ('select(0)', '<Ctrl>a'),
+            ('select(1)', '<Ctrl><Shift>a'),
             ('main-menu', 'F10'),
         ]
         for a, k in accels:
@@ -1112,6 +1115,36 @@ def set_paste_location(self, pastemode, data_is_filepaths):
                 ref_to = Gtk.TreeRowReference.new(model, selection[0])
         return ref_to, before
 
+    def on_action_select(self, _action, option, _unknown):
+        """Selects items according to selected option."""
+        selectoptions = {0: 'ALL', 1: 'DESELECT', 2: 'ODD', 3: 'EVEN', 4: 'INVERT'}
+        selectoption = selectoptions[option.get_int32()]
+        model = self.iconview.get_model()
+        if selectoption == 'ALL':
+            self.iconview.select_all()
+        elif selectoption == 'DESELECT':
+            self.iconview.unselect_all()
+        elif selectoption == 'ODD':
+            for row in model:
+                page_number = row[3]
+                if page_number % 2:
+                    self.iconview.select_path(row.path)
+                else:
+                    self.iconview.unselect_path(row.path)
+        elif selectoption == 'EVEN':
+            for row in model:
+                page_number = row[3]
+                if page_number % 2:
+                    self.iconview.unselect_path(row.path)
+                else:
+                    self.iconview.select_path(row.path)
+        elif selectoption == 'INVERT':
+            for row in model:
+                if self.iconview.path_is_selected(row.path):
+                    self.iconview.unselect_path(row.path)
+                else:
+                    self.iconview.select_path(row.path)
+
     @staticmethod
     def iv_drag_begin(iconview, context):
         """Sets custom drag icon."""
@@ -1657,7 +1690,7 @@ def reset_export_file(self, model, _path, _itr=None, _user_data=None):
     def __update_num_pages(self, model, _path=None, _itr=None, _user_data=None):
         num_pages = len(model)
         self.uiXML.get_object("num_pages").set_text(str(num_pages))
-        for a in ["save", "save-as"]:
+        for a in ["save", "save-as", "select"]:
             self.window.lookup_action(a).set_enabled(num_pages > 0)
 
     def error_message_dialog(self, msg, msg_type=Gtk.MessageType.ERROR):