SqlBrowser/SqlBrowser.py

Sat, 07 Apr 2012 21:19:24 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 07 Apr 2012 21:19:24 +0200
changeset 1770
c17e67e69ef5
parent 1509
c0b5e693b0eb
child 2101
5bac7dee9e1a
child 2303
0ed4ed026c16
permissions
-rw-r--r--

Added a tool to take screenshots (fullscreen or rectangular selection).

# -*- coding: utf-8 -*-

# Copyright (c) 2009 - 2012 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the SQL Browser main window.
"""

from PyQt4.QtCore import QTimer, QUrl
from PyQt4.QtGui import QKeySequence, qApp, QMainWindow
from PyQt4.QtSql import QSqlError, QSqlDatabase

from E5Gui.E5Action import E5Action
from E5Gui import E5MessageBox

from .SqlBrowserWidget import SqlBrowserWidget

import UI.PixmapCache
import UI.Config


class SqlBrowser(QMainWindow):
    """
    Class implementing the SQL Browser main window.
    """
    def __init__(self, connections=[], parent=None):
        """
        Constructor
        
        @param connections list of database connections to add (list of strings)
        @param reference to the parent widget (QWidget)
        """
        super().__init__(parent)
        self.setObjectName("SqlBrowser")
        
        self.setWindowTitle(self.trUtf8("SQL Browser"))
        self.setWindowIcon(UI.PixmapCache.getIcon("eric.png"))
        
        self.__browser = SqlBrowserWidget(self)
        self.setCentralWidget(self.__browser)
        
        self.__browser.statusMessage.connect(self.statusBar().showMessage)
        
        self.__initActions()
        self.__initMenus()
        self.__initToolbars()
        
        self.resize(self.__browser.size())
        
        self.__warnings = []
        
        for connection in connections:
            url = QUrl(connection, QUrl.TolerantMode)
            if not url.isValid():
                self.__warnings.append(self.trUtf8("Invalid URL: {0}").format(connection))
                continue
            
            err = self.__browser.addConnection(url.scheme(), url.path(),
                                               url.userName(), url.password(),
                                               url.host(), url.port(-1))
            if err.type() != QSqlError.NoError:
                self.__warnings.append(
                    self.trUtf8("Unable to open connection: {0}".format(err.text())))
        
        QTimer.singleShot(0, self.__uiStartUp)
    
    def __uiStartUp(self):
        """
        Private slot to do some actions after the UI has started and the main loop is up.
        """
        for warning in self.__warnings:
            E5MessageBox.warning(self,
                self.trUtf8("SQL Browser startup problem"),
                warning)
        
        if len(QSqlDatabase.connectionNames()) == 0:
            self.__browser.addConnectionByDialog()
    
    def __initActions(self):
        """
        Private method to define the user interface actions.
        """
        # list of all actions
        self.__actions = []
        
        self.addConnectionAct = E5Action(self.trUtf8('Add Connection'),
            UI.PixmapCache.getIcon("databaseConnection.png"),
            self.trUtf8('Add &Connection...'),
            0, 0, self, 'sql_file_add_connection')
        self.addConnectionAct.setStatusTip(self.trUtf8(
                'Open a dialog to add a new database connection'))
        self.addConnectionAct.setWhatsThis(self.trUtf8(
                """<b>Add Connection</b>"""
                """<p>This opens a dialog to add a new database connection.</p>"""
        ))
        self.addConnectionAct.triggered[()].connect(self.__browser.addConnectionByDialog)
        self.__actions.append(self.addConnectionAct)
        
        self.exitAct = E5Action(self.trUtf8('Quit'),
            UI.PixmapCache.getIcon("exit.png"),
            self.trUtf8('&Quit'),
            QKeySequence(self.trUtf8("Ctrl+Q", "File|Quit")),
            0, self, 'sql_file_quit')
        self.exitAct.setStatusTip(self.trUtf8('Quit the SQL browser'))
        self.exitAct.setWhatsThis(self.trUtf8(
                """<b>Quit</b>"""
                """<p>Quit the SQL browser.</p>"""
        ))
        self.exitAct.triggered[()].connect(qApp.closeAllWindows)
        
        self.aboutAct = E5Action(self.trUtf8('About'),
            self.trUtf8('&About'),
            0, 0, self, 'sql_help_about')
        self.aboutAct.setStatusTip(self.trUtf8('Display information about this software'))
        self.aboutAct.setWhatsThis(self.trUtf8(
                """<b>About</b>"""
                """<p>Display some information about this software.</p>"""
        ))
        self.aboutAct.triggered[()].connect(self.__about)
        self.__actions.append(self.aboutAct)
        
        self.aboutQtAct = E5Action(self.trUtf8('About Qt'),
            self.trUtf8('About &Qt'),
            0, 0, self, 'sql_help_about_qt')
        self.aboutQtAct.setStatusTip(
            self.trUtf8('Display information about the Qt toolkit'))
        self.aboutQtAct.setWhatsThis(self.trUtf8(
                """<b>About Qt</b>"""
                """<p>Display some information about the Qt toolkit.</p>"""
        ))
        self.aboutQtAct.triggered[()].connect(self.__aboutQt)
        self.__actions.append(self.aboutQtAct)
    
    def __initMenus(self):
        """
        Private method to create the menus.
        """
        mb = self.menuBar()
        
        menu = mb.addMenu(self.trUtf8('&File'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.addConnectionAct)
        menu.addSeparator()
        menu.addAction(self.exitAct)
        
        mb.addSeparator()
        
        menu = mb.addMenu(self.trUtf8('&Help'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.aboutAct)
        menu.addAction(self.aboutQtAct)
    
    def __initToolbars(self):
        """
        Private method to create the toolbars.
        """
        filetb = self.addToolBar(self.trUtf8("File"))
        filetb.setObjectName("FileToolBar")
        filetb.setIconSize(UI.Config.ToolBarIconSize)
        filetb.addAction(self.addConnectionAct)
        filetb.addSeparator()
        filetb.addAction(self.exitAct)
    
    def __about(self):
        """
        Private slot to show the about information.
        """
        E5MessageBox.about(self, self.trUtf8("SQL Browser"), self.trUtf8(
            """<h3>About SQL Browser</h3>"""
            """<p>The SQL browser window is a little tool to examine """
            """the data and the schema of a database and to execute """
            """queries on a database.</p>"""
        ))
    
    def __aboutQt(self):
        """
        Private slot to show info about Qt.
        """
        E5MessageBox.aboutQt(self, self.trUtf8("SQL Browser"))

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