Initial commit

Tree_View_Widget/Exercise_1.py

@@ -0,0 +1,119 @@
+#!/usr/bin/python3
+
+import sys, os
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk, GObject, GdkPixbuf
+
+class AppWindow(Gtk.ApplicationWindow):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.ICON = 0
+        self.FILENAME = 1
+        self.current_path = []
+        self.set_border_width(10)
+        self.set_size_request(250, 500)
+
+        treeview = Gtk.TreeView.new()
+        treeview.connect("row-activated", self.on_row_activated)
+
+        self.setup_tree_view(treeview)
+        self.setup_tree_model(treeview)
+
+        scrolled_win = Gtk.ScrolledWindow.new()
+        scrolled_win.set_policy(Gtk.PolicyType.AUTOMATIC, 
+                                Gtk.PolicyType.AUTOMATIC)
+
+        scrolled_win.add(treeview)
+        self.add(scrolled_win)
+
+    def setup_tree_view(self, treeview):
+        column = Gtk.TreeViewColumn.new()
+        column.set_title("File Browser")
+  
+        renderer = Gtk.CellRendererPixbuf.new()
+        column.pack_start(renderer, False)
+        column.add_attribute(renderer, "pixbuf", self.ICON)
+  
+        renderer = Gtk.CellRendererText.new()
+        column.pack_start(renderer, True)
+        column.add_attribute(renderer, "text", self.FILENAME)
+  
+        treeview.append_column(column)
+
+    def setup_tree_model(self, treeview):
+        store = Gtk.ListStore(GdkPixbuf.Pixbuf, GObject.TYPE_STRING)
+        treeview.set_model(store)
+        
+        self.populate_tree_model(treeview)
+
+    def populate_tree_model(self, treeview):
+        store = treeview.get_model()
+        store.clear()
+        
+        # Build the tree path out of current_path.
+        if self.current_path == []:
+            location ="/"
+        else:
+            for temp in current_path:
+                location = location + "/" + temp
+
+            iter = store.append()
+            store.set(iter, self.ICON, directory, self.FILENAME, "..")
+
+        # Parse through the directory, adding all of its contents to the model.
+        for file in os.listdir(location):
+            temp = location + "/" + file
+
+            if os.path.isdir(file):
+                pixbuf = GdkPixbuf.Pixbuf.new_from_file ("directory.png")
+            else:
+                pixbuf = GdkPixbuf.Pixbuf.new_from_file ("file.png")
+
+        iter = store.append()
+        store.set(iter, self.ICON, pixbuf, self.FILENAME, file)
+
+    def on_row_activated(self, treeview, fpath, column):
+        model = treeview.get_model()
+        iter = model.get_iter(fpath)
+        if iter:
+            file = model.get(iter, self.FILENAME)
+            
+            if file == "..":
+                node = pop(current_path)
+                self.populate_tree_model(treeview)
+            else:
+                if len(self.current_path) == 0:
+                  location = "/"
+                else:
+                    if self.current_path == []:
+                        location ="/"
+                    else:
+                        for file in current_path:
+                            location = location + "/" + file
+
+                        iter = store.append()
+                        store.set(iter, self.ICON, directory, self.FILENAME, "..")
+
+                if os.path.isdir(location):
+                    current_path = location
+                    self.populate_tree_model(treeview)
+
+
+class Application(Gtk.Application):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, application_id="org.example.myapp",
+                         **kwargs)
+        self.window = None
+
+    def do_activate(self):
+        if not self.window:
+            self.window = AppWindow(application=self, title="Exercise 1")
+        self.window.show_all()
+        self.window.present()
+
+if __name__ == "__main__":
+    app = Application()
+    app.run(sys.argv)