pygtk-TreeView

TreeStore提供分等级，分层次的数据存储，而ListStore提供表格的数据存储,TreeModelSort提供一个排序的模型，TreeModelFilter提供数据子集。通常有以下几个步骤：

1.创建一个tree model对象，通过ListStore或TreeStore

2.TreeView widget 创建并与tree model关联

3.一个或多个TreeViewColumns被创建并插入到TreeView，每个代表一列

4.对于每个TreeViewColumn，CellRenderers被创建并加入TreeViewColumn

5.设置每个CellRenderer的属性

6.TreeView被插入并显示在Window或ScrolledWindow中

7.响应用户的操作

 

 

#!/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()