#!/usr/bin/env python

#****************************************************************************
# tmptextedit.py, provides a qt3 extended text editor that signals focus loss
#
# Copyright (C) 2002, Douglas W. Bell
#
# This is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License, Version 2.  This program is
# distributed in the hope that it will be useful, but WITTHOUT ANY WARRANTY.
#*****************************************************************************

from qt import *

class TmpTextEdit(QTextEdit):
    """Gives temporary multi-line editor, signals focus loss & return key"""
    def __init__(self, text, parent=None, name=None):
        QTextEdit.__init__(self, parent, name)
        self.setTextFormat(Qt.PlainText)
        self.setText(text)
        self.active = 1
        self.maxLines = 0
        self.origText = text

    def setMaxLines(self, numLines):
        """Set maximum length"""
        self.maxLines = numLines

    def focusOutEvent(self, event):
        """Signals to end editing if focus shifts"""
        QTextEdit.focusOutEvent(self, event)
        if self.active:
            self.active = 0       # one signal only
            self.emit(PYSIGNAL('editDone'), ())

    def keyPressEvent(self, event):
        """Signals return key press"""
        if event.key() in (Qt.Key_Return, Qt.Key_Enter):
            if self.active and self.maxLines and self.lines() >= self.maxLines:
                self.active = 0       # one signal only
                self.emit(PYSIGNAL('editDone'), ())
            else:
                QTextEdit.keyPressEvent(self, event)
        elif event.key() in (Qt.Key_Tab, Qt.Key_Escape):
            if self.active:
                if event.key() == Qt.Key_Escape:
                    self.setText(self.origText)
                self.active = 0       # one signal only
                self.emit(PYSIGNAL('editDone'), ())
        else:
            QTextEdit.keyPressEvent(self, event)