TreeStore提供分等級(jí),分層次的數(shù)據(jù)存儲(chǔ),而ListStore提供表格的數(shù)據(jù)存儲(chǔ),TreeModelSort提供一個(gè)排序的模型,TreeModelFilter提供數(shù)據(jù)子集。通常有以下幾個(gè)步驟:
1.創(chuàng)建一個(gè)tree model對(duì)象,通過ListStore或TreeStore
2.TreeView widget 創(chuàng)建并與tree model關(guān)聯(lián)
3.一個(gè)或多個(gè)TreeViewColumns被創(chuàng)建并插入到TreeView,每個(gè)代表一列
4.對(duì)于每個(gè)TreeViewColumn,CellRenderers被創(chuàng)建并加入TreeViewColumn
5.設(shè)置每個(gè)CellRenderer的屬性
6.TreeView被插入并顯示在Window或ScrolledWindow中
7.響應(yīng)用戶的操作
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#!/usr/bin/env python
# example basictreeview.py
import pygtk
pygtk.require('2.0')
import gtk
class BasicTreeViewExample:
# close the window and quit
def delete_event(self, widget, event, data=None):
gtk.main_quit()
return False
def __init__(self):
# Create a new window
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_title("Basic TreeView Example")
self.window.set_size_request(200, 200)
self.window.connect("delete_event", self.delete_event)
# create a TreeStore with one string column to use as the model
self.treestore = gtk.TreeStore(str)
# we'll add some data now - 4 rows with 3 child rows each
for parent in range(4):
piter = self.treestore.append(None, ['parent %i' % parent])
for child in range(3):
self.treestore.append(piter, ['child %i of parent %i' %(child, parent)])
# create the TreeView using treestore
self.treeview = gtk.TreeView(self.treestore)
# create the TreeViewColumn to display the data
self.tvcolumn = gtk.TreeViewColumn('Column 0')
# add tvcolumn to treeview
self.treeview.append_column(self.tvcolumn)
# create a CellRendererText to render the data
self.cell = gtk.CellRendererText()
# add the cell to the tvcolumn and allow it to expand
self.tvcolumn.pack_start(self.cell, True)
# set the cell "text" attribute to column 0 - retrieve text
# from that column in treestore
self.tvcolumn.add_attribute(self.cell, 'text', 0)
# make it searchable
self.treeview.set_search_column(0)
# Allow sorting on the column
self.tvcolumn.set_sort_column_id(0)
# Allow drag and drop reordering of rows
self.treeview.set_reorderable(True)
self.window.add(self.treeview)
self.window.show_all()
def main():
gtk.main()
if __name__ == "__main__":
tvexample = BasicTreeViewExample()
main()
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