filechooser: enhance filechooser to include entry_released. we have now a feedback before the item is used, because down is updating selection, up will submit it. + add it in showcase.

Author: tito

examples/demo/showcase/main.py

@@ -16,6 +16,7 @@
 from kivy.uix.label import Label
 from kivy.uix.popup import Popup
 from kivy.uix.accordion import Accordion, AccordionItem
+from kivy.uix.filechooser import FileChooserIconView, FileChooserListView
 
 
 class Showcase(FloatLayout):
@@ -60,22 +61,20 @@ def attach_node(text, n):
         n = create_tree('Buttons')
         attach_node('Standard buttons', n)
         attach_node('Options buttons', n)
-        n = create_tree('Sliders')
         attach_node('Horizontal sliders', n)
         attach_node('Vertical sliders', n)
-        n = create_tree('Scatter')
         attach_node('Scatter with image', n)
         attach_node('Scatter with buttons', n)
-        n = create_tree('Textinput')
         attach_node('Monoline textinput', n)
         attach_node('Multiline textinput', n)
-        n = create_tree('TreeView')
         attach_node('Standard treeview', n)
         attach_node('Treeview without root', n)
-        n = create_tree('Others')
         attach_node('Accordion', n)
         attach_node('Popup', n)
         attach_node('Switch', n)
+        n = create_tree('Experimentals')
+        attach_node('Filechooser icon', n)
+        attach_node('Filechooser list', n)
         root.add_widget(tree)
         self.content = content = BoxLayout()
         root.add_widget(content)
@@ -192,6 +191,12 @@ def show_accordion(self):
         col.add_widget(root)
         return col
 
+    def show_filechooser_icon(self):
+        return FileChooserIconView()
+
+    def show_filechooser_list(self):
+        return FileChooserListView()
+
 
 if __name__ in ('__main__', '__android__'):
     ShowcaseApp().run()

kivy/data/style.kv

@@ -201,6 +201,7 @@
     # Don't allow expansion of the ../ node
     is_leaf: not ctx.isdir or ctx.name.endswith('..' + ctx.sep) or self.locked
     on_touch_down: self.collide_point(*args[1].pos) and ctx.controller.entry_touched(self, args[1])
+    on_touch_up: self.collide_point(*args[1].pos) and ctx.controller.entry_released(self, args[1])
     BoxLayout:
         pos: root.pos
         Label:
@@ -244,6 +245,7 @@
     size_hint: None, None
 
     on_touch_down: self.collide_point(*args[1].pos) and ctx.controller.entry_touched(self, args[1])
+    on_touch_up: self.collide_point(*args[1].pos) and ctx.controller.entry_released(self, args[1])
 
     canvas:
         Color:

kivy/uix/filechooser.py

@@ -140,6 +140,9 @@ def __init__(self, **kwargs):
         self.register_event_type('on_submit')
         super(FileChooserController, self).__init__(**kwargs)
 
+        self._items = []
+        self.bind(selection=self._update_item_selection)
+
         if platform in ('darwin', 'linux2'):
             self.is_hidden = is_hidden_unix
         elif platform == 'win32':
@@ -151,6 +154,10 @@ def __init__(self, **kwargs):
                   filters=self._trigger_update)
         self._trigger_update()
 
+    def _update_item_selection(self, *args):
+        for item in self._items:
+            item.selected = item.path in self.selection
+
     def _trigger_update(self, *args):
         Clock.unschedule(self._update_files)
         Clock.schedule_once(self._update_files)
@@ -168,9 +175,12 @@ def on_remove_subentry(self, subentry, entry):
         pass
 
     def on_submit(self, selected, touch=None):
-        self.selection = []
+        pass
 
     def entry_touched(self, entry, touch):
+        '''(internal) This method must be called by the template when an entry
+        is touched by the user.
+        '''
         if self.multiselect:
             if isdir(entry.path) and touch.is_double_tap:
                 self.open_entry(entry)
@@ -181,10 +191,23 @@ def entry_touched(self, entry, touch):
                     self.selection.append(entry.path)
         else:
             if isdir(entry.path):
-                self.open_entry(entry)
+                pass
             else:
                 self.selection = [entry.path, ]
-                self.dispatch('on_submit', [entry.path], touch)
+
+    def entry_released(self, entry, touch):
+        '''(internal) This method must be called by the template when an entry
+        is touched by the user.
+
+        .. versionadded:: 1.0.10
+        '''
+        if self.multiselect:
+            pass
+        else:
+            if isdir(entry.path):
+                self.open_entry(entry)
+            elif touch.is_double_tap:
+                self.dispatch('on_submit', self.selection, touch)
 
     def open_entry(self, entry):
         try:
@@ -232,6 +255,7 @@ def get_nice_size(self, fn):
     def _update_files(self, *args):
         # Clear current files
         self.dispatch('on_entries_cleared')
+        self._items = []
 
         # Add the components that are always needed
         if platform == 'win32':
@@ -247,6 +271,7 @@ def _update_files(self, *args):
             pardir = Builder.template(self._ENTRY_TEMPLATE, **dict(name=back,
                 size='', path=back, controller=self, isdir=True, parent=None,
                 sep=sep, get_nice_size=lambda: ''))
+            self._items.append(pardir)
             self.dispatch('on_entry_added', pardir)
         try:
             self._add_files(self.path)