first commit

kivy_venv/share/kivy-examples/RST_Editor/editor.kv

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+#:kivy 1.1.0
+
+Root:
+    text_input: text_input
+
+    BoxLayout:
+        orientation: 'vertical'
+        BoxLayout:
+            size_hint_y: None
+            height: 30
+            Button:
+                text: 'Load'
+                on_release: root.show_load()
+            Button:
+                text: 'Save'
+                on_release: root.show_save()
+
+        BoxLayout:
+            TextInput:
+                id: text_input
+                text: ''
+
+            RstDocument:
+                text: text_input.text
+                show_errors: True
+
+<LoadDialog>:
+    BoxLayout:
+        size: root.size
+        pos: root.pos
+        orientation: "vertical"
+        FileChooserListView:
+            id: filechooser
+
+        BoxLayout:
+            size_hint_y: None
+            height: 30
+            Button:
+                text: "Cancel"
+                on_release: root.cancel()
+
+            Button:
+                text: "Load"
+                on_release: root.load(filechooser.path, filechooser.selection)
+
+<SaveDialog>:
+    text_input: text_input
+    BoxLayout:
+        size: root.size
+        pos: root.pos
+        orientation: "vertical"
+        FileChooserListView:
+            id: filechooser
+            on_selection: text_input.text = self.selection and self.selection[0] or ''
+
+        TextInput:
+            id: text_input
+            size_hint_y: None
+            height: 30
+            multiline: False
+
+        BoxLayout:
+            size_hint_y: None
+            height: 30
+            Button:
+                text: "Cancel"
+                on_release: root.cancel()
+
+            Button:
+                text: "Save"
+                on_release: root.save(filechooser.path, text_input.text)
+

kivy_venv/share/kivy-examples/RST_Editor/main.py

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+from kivy.app import App
+from kivy.uix.floatlayout import FloatLayout
+from kivy.factory import Factory
+from kivy.properties import ObjectProperty
+from kivy.uix.popup import Popup
+
+import os
+
+
+class LoadDialog(FloatLayout):
+    load = ObjectProperty(None)
+    cancel = ObjectProperty(None)
+
+
+class SaveDialog(FloatLayout):
+    save = ObjectProperty(None)
+    text_input = ObjectProperty(None)
+    cancel = ObjectProperty(None)
+
+
+class Root(FloatLayout):
+    loadfile = ObjectProperty(None)
+    savefile = ObjectProperty(None)
+    text_input = ObjectProperty(None)
+
+    def dismiss_popup(self):
+        self._popup.dismiss()
+
+    def show_load(self):
+        content = LoadDialog(load=self.load, cancel=self.dismiss_popup)
+        self._popup = Popup(title="Load file", content=content,
+                            size_hint=(0.9, 0.9))
+        self._popup.open()
+
+    def show_save(self):
+        content = SaveDialog(save=self.save, cancel=self.dismiss_popup)
+        self._popup = Popup(title="Save file", content=content,
+                            size_hint=(0.9, 0.9))
+        self._popup.open()
+
+    def load(self, path, filename):
+        with open(os.path.join(path, filename[0])) as stream:
+            self.text_input.text = stream.read()
+
+        self.dismiss_popup()
+
+    def save(self, path, filename):
+        with open(os.path.join(path, filename), 'w') as stream:
+            stream.write(self.text_input.text)
+
+        self.dismiss_popup()
+
+
+class Editor(App):
+    pass
+
+
+Factory.register('Root', cls=Root)
+Factory.register('LoadDialog', cls=LoadDialog)
+Factory.register('SaveDialog', cls=SaveDialog)
+
+
+if __name__ == '__main__':
+    Editor().run()