browser.py
author Radek Brich <radek.brich@devl.cz>
Mon, 17 Dec 2012 21:12:04 +0100
changeset 57 ba323bbed6a4
parent 31 c2e6e24b83d9
child 72 539c2dd47f3b
permissions -rwxr-xr-x
Update browser tool: Add Schemas and Tables nodes, populate nodes when expanded.
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import locale
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locale.setlocale(locale.LC_ALL, '')
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from tuikit import *
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from pgtoolkit import pgbrowser
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from pgtoolkit.toolbase import SimpleTool
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class MyApplication(Application, SimpleTool):
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    PLACEHOLDER = '__placeholder__'
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    def __init__(self):
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        Application.__init__(self)
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        SimpleTool.__init__(self, name='browser', desc='PostgreSQL database browser.')
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        self.init()
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        self.top.connect('keypress', self.on_top_keypress)
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        self.browser = pgbrowser.PgBrowser(self.pgm.get_conn('target'))
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        self.model = TreeModel()
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        self.view = TreeView(self.model)
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        self.view.connect('expand', self.on_view_expand)
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        self.top.add(self.view)
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        vert = VerticalLayout()
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        self.top.layout(vert)
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        self.populate_schemas()
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    def populate_schemas(self):
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        schemas = self.browser.list_schemas()
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        schema_list = [schema['name'] for schema in schemas if not schema['system']]
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        self.model.add('/', TreeNode('schemas', 'Schemas (%d)' % len(schema_list)))
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        self.model.add('/schemas', schema_list)
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        for schema_name in schema_list:
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            path = '/schemas/' + schema_name
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            self.model.add(path, self.PLACEHOLDER)
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            self.view.collapse(path)
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    def populate_tables(self, node, schema_name):
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        """Read table list, put in node.
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        Node is replaced by 'Tables (N)' node,
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        tables are created as its children.
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        """
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        tables = self.browser.list_tables(schema=schema_name)
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        table_list = [table['name'] for table in tables]
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        node.name = 'tables'
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        node.title = 'Tables (%d)' % len(table_list)
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        for table_name in table_list:
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            node.add(TreeNode(table_name))
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    def on_view_expand(self, node):
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        if node.parent.name == 'schemas' and node.children[0].name == self.PLACEHOLDER:
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            schema_name = node.name
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            self.populate_tables(node.children[0], schema_name)
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    def on_top_keypress(self, keyname, char):
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        if keyname == 'escape':
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            self.terminate()
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if __name__ == '__main__':
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    app = MyApplication()
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    app.start()
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