# Copyright 2008 Nanorex, Inc.  See LICENSE file for details.
"""

@author: Ninad
@copyright: 2008 Nanorex, Inc.  See LICENSE file for details.
@version:$Id$

History:
Created on 2008-07-15 . The main purpose of this class was a workaround to
new Qt4.3.2 BUG 2916 in the QToolbar extension popup indicator.

TODO:
"""

from PyQt4.Qt import QWidgetAction

from PyQt4.Qt import QToolButton
from PyQt4.Qt import Qt


def truncateText(text, length = 12, truncateSymbol = '...'):
    """
    Truncates the tooltip text with the given truncation symbol
    (three dots) in the case
    """

    #ninad 070201 This is a temporary fix. Ideally it should show the whole
    #text in the  toolbutton. But there are some layout / size policy
    #problems because of which the toolbar height increases after you print
    #tooltip text on two or more lines. (undesirable effect)

    if not text:
        print "no text to truncate. Returning"
        return

    truncatedLength  = length - len(truncateSymbol)

    if len(text) > length:
        return text[:truncatedLength] + truncateSymbol
    else:
        return text


def wrapToolButtonText(text):
    """
    Add a newline character at the end of each word in the toolbutton text
    """
    #ninad 070126 QToolButton lacks this method. This is not really a
    #'word wrap' but OK for now.

    #@@@ ninad 070126. Not calling this method as it is creating an annoying
    #resizing problem in the Command toolbar layout. Possible solution is
    #to add a spacer item in a vbox layout to the command toolbar layout

    stringlist = text.split(" ", QString.SkipEmptyParts)
    text2 = QString()
    if len(stringlist) > 1:
        for l in stringlist:
            text2.append(l)
            text2.append("\n")
        return text2

    return None



_superclass = QWidgetAction

class NE1_QWidgetAction(_superclass):
    def __init__(self, parent, win = None):
        _superclass.__init__(self, parent)
        self.win = win
        self._toolButtonPalette = None

    def createWidget(self, parent):

        cmdToolbar = self.win.commandToolbar

        btn = None
        if cmdToolbar:
            flyoutToolBar = cmdToolbar.flyoutToolBar
            if flyoutToolBar:
                if 0:
                    print "***self.text() =%s, parent = %s"%(self.text(),
                                                             parent)

            if parent is flyoutToolBar:
                btn = self._createToolButtonWidget(parent)

        return btn

    def _createToolButtonWidget(self, parent):
        """
        @see: self.createWidget()
        """
        btn = QToolButton(parent)
        btn.setAutoFillBackground(True)
        btn.setToolButtonStyle(Qt.ToolButtonTextUnderIcon)
        btn.setMinimumWidth(75)
        btn.setMaximumWidth(75)
        btn.setMinimumHeight(62)
        btn.setAutoRaise(True)

        btn.setCheckable(True)
        btn.setDefaultAction(self)

        text = truncateText(self.text())
        btn.setText(text)

        if self._toolButtonPalette:
            btn.setPalette(self._toolButtonPalette)

        #@@@ ninad070125 The following function
        #adds a newline character after each word in toolbutton text.
        #but the changes are reflected only on 'mode' toolbuttons
        #on the flyout toolbar (i.e.only Checkable buttons..don't know
        #why. Disabling its use for now.
        debug_wrapText = False

        if debug_wrapText:
            text = wrapToolButtonText(action.text())
            if text:
                action.setText(text)

        return btn


    def setToolButtonPalette(self, palette):
        """
        @see: CommandToolbar._createFlyoutToolbar()
        """
        self._toolButtonPalette = palette