<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="treeview_treestore.py" xml:lang="gl">
<info>
<title type="text">TreeView with TreeStore (Python)</title>
<link type="guide" xref="beginner.py#treeview"/>
<link type="seealso" xref="model-view-controller.py"/>
<link type="next" xref="model-view-controller.py"/>
<revision version="0.1" date="2012-06-30" status="draft"/>
<credit type="author copyright">
<name>Marta Maria Casetti</name>
<email its:translate="no">mmcasetti@gmail.com</email>
<years>2012</years>
</credit>
<desc>Un TreeView mostrando un TreeStore (exemplo máis simple)</desc>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Fran Dieguez</mal:name>
<mal:email>frandieguez@gnome.org</mal:email>
<mal:years>2012-2013.</mal:years>
</mal:credit>
</info>
<title>Simpler TreeView with TreeStore</title>
<media type="image" mime="image/png" src="media/treeview_treestore.png"/>
<p>Este TreeView mostra un TreeStore.</p>
<links type="section"/>
<section id="code">
<title>Código usado para xerar este exemplo</title>
<code mime="text/x-python" style="numbered">from gi.repository import Gtk
from gi.repository import Pango
import sys
books = [["Tolstoy, Leo", "War and Peace", "Anna Karenina"],
["Shakespeare, William", "Hamlet", "Macbeth", "Othello"],
["Tolkien, J.R.R.", "The Lord of the Rings"]]
class MyWindow(Gtk.ApplicationWindow):
def __init__(self, app):
Gtk.Window.__init__(self, title="Library", application=app)
self.set_default_size(250, 100)
self.set_border_width(10)
# the data are stored in the model
# create a treestore with one column
store = Gtk.TreeStore(str)
for i in range(len(books)):
# the iter piter is returned when appending the author
piter = store.append(None, [books[i][0]])
# append the books as children of the author
j = 1
while j < len(books[i]):
store.append(piter, [books[i][j]])
j += 1
# the treeview shows the model
# create a treeview on the model store
view = Gtk.TreeView()
view.set_model(store)
# the cellrenderer for the column - text
renderer_books = Gtk.CellRendererText()
# the column is created
column_books = Gtk.TreeViewColumn(
"Books by Author", renderer_books, text=0)
# and it is appended to the treeview
view.append_column(column_books)
# the books are sortable by author
column_books.set_sort_column_id(0)
# add the treeview to the window
self.add(view)
class MyApplication(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self)
def do_activate(self):
win = MyWindow(self)
win.show_all()
def do_startup(self):
Gtk.Application.do_startup(self)
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
</code>
</section>
<section id="methods">
<title>Métodos útiles para o widget TreeView</title>
<p>The TreeView widget is designed around a <em>Model/View/Controller</em> design: the <em>Model</em> stores the data; the <em>View</em> gets change notifications and displays the content of the model; the <em>Controller</em>, finally, changes the state of the model and notifies the view of these changes. For more information and for a list of useful methods for TreeModel see <link xref="model-view-controller.py"/>.</p>
</section>
<section id="references">
<title>API References</title>
<p>Neste exemplo empregaremos o seguinte:</p>
<list>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkTreeView.html">GtkTreeView</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkTreeModel.html">GtkTreeModel</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkTreeStore.html">GtkTreeStore</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkCellRendererText.html">GtkCellRendererText</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkTreeViewColumn.html">GtkTreeViewColumn</link></p></item>
</list>
</section>
</page>