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stable qtlib: allow button with no hotkey to be set as default or cancel

Changeset e5d69f492b7c

Parent 511edbc7fed1

by David Golub

Changes to one file · Browse files at e5d69f492b7c Showing diff from parent 511edbc7fed1 Diff from another changeset...

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 # qtlib.py - Qt utility code  #  # Copyright 2010 Steve Borho <steve@borho.org>  #  # This software may be used and distributed according to the terms of the  # GNU General Public License version 2 or any later version.    import os  import sys  import atexit  import shutil  import stat  import subprocess  import tempfile  import re  import weakref    from mercurial import extensions, error, util    from tortoisehg.util import hglib, paths  from tortoisehg.hgqt.i18n import _  from hgext.color import _styles    from PyQt4.QtCore import *  from PyQt4.QtGui import *    if PYQT_VERSION_STR.split('.') < ['4', '7'] or \   QT_VERSION_STR.split('.') < ['4', '6']:   sys.stderr.write('TortoiseHg requires Qt 4.6 and PyQt 4.7\n')   sys.stderr.write('You have Qt %s and PyQt %s\n' %   (QT_VERSION_STR, PYQT_VERSION_STR))   sys.exit()    try:   import win32con   openflags = win32con.CREATE_NO_WINDOW  except ImportError:   openflags = 0    tmproot = None  def gettempdir():   global tmproot   def cleanup():   def writeable(arg, dirname, names):   for name in names:   fullname = os.path.join(dirname, name)   os.chmod(fullname, os.stat(fullname).st_mode | stat.S_IWUSR)   try:   os.path.walk(tmproot, writeable, None)   shutil.rmtree(tmproot)   except:   pass   if not tmproot:   tmproot = tempfile.mkdtemp(prefix='thg.')   atexit.register(cleanup)   return tmproot    def openhelpcontents(url):   'Open online help, use local CHM file if available'   if not url.startswith('http'):   fullurl = 'http://tortoisehg.org/manual/2.1/' + url   # Use local CHM file if it can be found   if os.name == 'nt' and paths.bin_path:   chm = os.path.join(paths.bin_path, 'doc', 'TortoiseHg.chm')   if os.path.exists(chm):   fullurl = (r'mk:@MSITStore:%s::/' % chm) + url   QDesktopServices.openUrl(QUrl.fromLocalFile(fullurl))   return   QDesktopServices.openUrl(QUrl(fullurl))    def editfiles(repo, files, lineno=None, search=None, parent=None):   if len(files) == 1:   path = repo.wjoin(files[0])   cwd = os.path.dirname(path)   files = [os.path.basename(path)]   else:   cwd = repo.root   files = [util.shellquote(util.localpath(f)) for f in files]   editor = repo.ui.config('tortoisehg', 'editor')   assert len(files) == 1 or lineno == None   if editor:   try:   regexp = re.compile('\[([^\]]*)\]')   expanded = []   pos = 0   for m in regexp.finditer(editor):   expanded.append(editor[pos:m.start()-1])   phrase = editor[m.start()+1:m.end()-1]   pos = m.end()+1   if '$LINENUM' in phrase:   if lineno is None:   # throw away phrase   continue   phrase = phrase.replace('$LINENUM', str(lineno))   elif '$SEARCH' in phrase:   if search is None:   # throw away phrase   continue   phrase = phrase.replace('$SEARCH', search)   if '$FILE' in phrase:   phrase = phrase.replace('$FILE', files[0])   files = []   expanded.append(phrase)   expanded.append(editor[pos:])   cmdline = ' '.join(expanded + files)   except ValueError, e:   # '[' or ']' not found   cmdline = ' '.join([editor] + files)   except TypeError, e:   # variable expansion failed   cmdline = ' '.join([editor] + files)   else:   editor = os.environ.get('HGEDITOR') or repo.ui.config('ui', 'editor') \   or os.environ.get('EDITOR', 'vi')   cmdline = ' '.join([editor] + files)   if os.path.basename(editor) in ('vi', 'vim', 'hgeditor'):   res = QMessageBox.critical(parent,   _('No visual editor configured'),   _('Please configure a visual editor.'))   from tortoisehg.hgqt.settings import SettingsDialog   dlg = SettingsDialog(False, focus='tortoisehg.editor')   dlg.exec_()   return     cmdline = util.quotecommand(cmdline)   try:   subprocess.Popen(cmdline, shell=True, creationflags=openflags,   stderr=None, stdout=None, stdin=None, cwd=cwd)   except (OSError, EnvironmentError), e:   QMessageBox.warning(parent,   _('Editor launch failure'),   u'%s : %s' % (hglib.tounicode(cmdline),   hglib.tounicode(str(e))))   return False    _user_shell = None  def openshell(root, reponame):   if not os.path.exists(root):   WarningMsgBox(   _('Failed to open path in terminal'),   _('"%s" is not a valid directory') % hglib.tounicode(root))   return   if _user_shell:   cwd = os.getcwd()   try:   shellcmd = _user_shell % {'reponame': reponame}   os.chdir(root)   QProcess.startDetached(shellcmd)   finally:   os.chdir(cwd)   else:   InfoMsgBox(_('No shell configured'),   _('A terminal shell must be configured'))    def configureshell(ui):   global _user_shell   _user_shell = ui.config('tortoisehg', 'shell')   if _user_shell:   return   if sys.platform == 'darwin':   return # Terminal.App does not support open-to-folder   elif os.name == 'nt':   _user_shell = 'cmd.exe /K title %(reponame)s'   else:   _user_shell = 'xterm -T "%(reponame)s"'    # _styles maps from ui labels to effects  # _effects maps an effect to font style properties. We define a limited  # set of _effects, since we convert color effect names to font style  # effect programatically.    _effects = {   'bold': 'font-weight: bold',   'italic': 'font-style: italic',   'underline': 'text-decoration: underline',  }    _thgstyles = {   # Styles defined by TortoiseHg   'log.branch': 'black #aaffaa_background',   'log.patch': 'black #aaddff_background',   'log.unapplied_patch': 'black #dddddd_background',   'log.tag': 'black #ffffaa_background',   'log.bookmark': 'blue #ffffaa_background',   'log.curbookmark': 'black #ffdd77_background',   'log.modified': 'black #ffddaa_background',   'log.added': 'black #aaffaa_background',   'log.removed': 'black #ffcccc_background',   'status.deleted': 'red bold',   'ui.error': 'red bold #ffcccc_background',   'control': 'black bold #dddddd_background',  }    thgstylesheet = '* { white-space: pre; font-family: monospace;' \   ' font-size: 9pt; }'  tbstylesheet = 'QToolBar { border: 0px }'    def configstyles(ui):   configureshell(ui)     # extensions may provide more labels and default effects   for name, ext in extensions.extensions():   _styles.update(getattr(ext, 'colortable', {}))     # tortoisehg defines a few labels and default effects   _styles.update(_thgstyles)     # allow the user to override   for status, cfgeffects in ui.configitems('color'):   if '.' not in status:   continue   cfgeffects = ui.configlist('color', status)   _styles[status] = ' '.join(cfgeffects)     for status, cfgeffects in ui.configitems('thg-color'):   if '.' not in status:   continue   cfgeffects = ui.configlist('thg-color', status)   _styles[status] = ' '.join(cfgeffects)    # See http://doc.trolltech.com/4.2/richtext-html-subset.html  # and http://www.w3.org/TR/SVG/types.html#ColorKeywords    def geteffect(labels):   'map labels like "log.date" to Qt font styles'   labels = str(labels) # Could be QString   effects = []   # Multiple labels may be requested   for l in labels.split():   if not l:   continue   # Each label may request multiple effects   es = _styles.get(l, '')   for e in es.split():   if e in _effects:   effects.append(_effects[e])   elif e.endswith('_background'):   e = e[:-11]   if e.startswith('#') or e in QColor.colorNames():   effects.append('background-color: ' + e)   elif e.startswith('#') or e in QColor.colorNames():   # Accept any valid QColor   effects.append('color: ' + e)   return ';'.join(effects)    def applyeffects(chars, effects):   return '<span style="white-space: pre;%s">%s</span>' % (effects, chars)    def getbgcoloreffect(labels):   """Map labels like "log.date" to background color if available     Returns QColor object. You may need to check validity by isValid().   """   for l in str(labels).split():   if not l:   continue   for e in _styles.get(l, '').split():   if e.endswith('_background'):   return QColor(e[:-11])   return QColor()    NAME_MAP = {   'fg': 'color', 'bg': 'background-color', 'family': 'font-family',   'size': 'font-size', 'weight': 'font-weight', 'space': 'white-space',   'style': 'font-style', 'decoration': 'text-decoration',  }    def markup(msg, **styles):   style = {'white-space': 'pre'}   for name, value in styles.items():   if not value:   continue   if name in NAME_MAP:   name = NAME_MAP[name]   style[name] = value   style = ';'.join(['%s: %s' % t for t in style.items()])   msg = hglib.tounicode(msg)   msg = Qt.escape(msg)   msg = msg.replace('\n', '<br />')   return u'<span style="%s">%s</span>' % (style, msg)    def descriptionhtmlizer(ui):   """Return a function to mark up ctx.description() as an HTML     >>> from mercurial import ui   >>> u = ui.ui()   >>> htmlize = descriptionhtmlizer(u)   >>> htmlize('foo <bar> \\n& <baz>')   u'foo &lt;bar&gt; \\n&amp; &lt;baz&gt;'     changeset hash link:   >>> htmlize('foo af50a62e9c20 bar')   u'foo <a href="cset:af50a62e9c20">af50a62e9c20</a> bar'   >>> htmlize('af50a62e9c2040dcdaf61ba6a6400bb45ab56410') # doctest: +ELLIPSIS   u'<a href="cset:af...10">af...10</a>'     http/https links:   >>> s = htmlize('foo http://example.com:8000/foo?bar=baz&bax#blah')   >>> (s[:63], s[63:]) # doctest: +NORMALIZE_WHITESPACE   (u'foo <a href="http://example.com:8000/foo?bar=baz&amp;bax#blah">',   u'http://example.com:8000/foo?bar=baz&amp;bax#blah</a>')   >>> htmlize('https://example/')   u'<a href="https://example/">https://example/</a>'     issue links:   >>> u.setconfig('tortoisehg', 'issue.regex', r'#(\\d+)\\b')   >>> u.setconfig('tortoisehg', 'issue.link', 'http://example/issue/{1}/')   >>> htmlize = descriptionhtmlizer(u)   >>> htmlize('foo #123')   u'foo <a href="http://example/issue/123/">#123</a>'     missing issue.link setting:   >>> u.setconfig('tortoisehg', 'issue.link', '')   >>> htmlize = descriptionhtmlizer(u)   >>> htmlize('foo #123')   u'foo #123'     too many replacements in issue.link:   >>> u.setconfig('tortoisehg', 'issue.link', 'http://example/issue/{1}/{2}')   >>> htmlize = descriptionhtmlizer(u)   >>> htmlize('foo #123')   u'foo #123'     invalid regexp in issue.regex:   >>> u.setconfig('tortoisehg', 'issue.regex', '(')   >>> htmlize = descriptionhtmlizer(u)   >>> htmlize('foo #123')   u'foo #123'   >>> htmlize('http://example/')   u'<a href="http://example/">http://example/</a>'   """   csmatch = r'(\b[0-9a-f]{12}(?:[0-9a-f]{28})?\b)'   httpmatch = r'(\b(http|https)://([-A-Za-z0-9+&@#/%?=~_()|!:,.;]*' \   r'[-A-Za-z0-9+&@#/%=~_()|]))'   regexp = r'%s|%s' % (csmatch, httpmatch)   bodyre = re.compile(regexp)     issuematch = ui.config('tortoisehg', 'issue.regex')   issuerepl = ui.config('tortoisehg', 'issue.link')   if issuematch and issuerepl:   regexp += '|(%s)' % issuematch   try:   bodyre = re.compile(regexp)   except re.error:   pass     def htmlize(desc):   """Mark up ctx.description() [localstr] as an HTML [unicode]"""   desc = unicode(Qt.escape(hglib.tounicode(desc)))     buf = ''   pos = 0   for m in bodyre.finditer(desc):   a, b = m.span()   if a >= pos:   buf += desc[pos:a]   pos = b   groups = m.groups()   if groups[0]:   cslink = groups[0]   buf += '<a href="cset:%s">%s</a>' % (cslink, cslink)   if groups[1]:   urllink = groups[1]   buf += '<a href="%s">%s</a>' % (urllink, urllink)   if len(groups) > 4 and groups[4]:   issue = groups[4]   issueparams = groups[4:]   try:   link = re.sub(r'\{(\d+)\}',   lambda m: issueparams[int(m.group(1))],   issuerepl)   buf += '<a href="%s">%s</a>' % (link, issue)   except IndexError:   buf += issue     if pos < len(desc):   buf += desc[pos:]     return buf     return htmlize    _iconcache = {}    def _findicon(name):   # TODO: icons should be placed at single location before release   for pfx in (':/icons', os.path.join(paths.get_icon_path(), 'svg'),   paths.get_icon_path()):   for ext in ('svg', 'png', 'ico'):   path = '%s/%s.%s' % (pfx, name, ext)   if QFile.exists(path):   return QIcon(path)     return None    # http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html  _SCALABLE_ICON_PATHS = [(QSize(), 'scalable/actions', '.svg'),   (QSize(), 'scalable/apps', '.svg'),   (QSize(), 'scalable/status', '.svg'),   (QSize(16, 16), '16x16/apps', '.png'),   (QSize(22, 22), '22x22/actions', '.png'),   (QSize(32, 32), '32x32/actions', '.png'),   (QSize(24, 24), '24x24/actions', '.png')]    def _findscalableicon(name):   """Find icon from qrc by using freedesktop-like icon lookup"""   o = QIcon()   for size, subdir, sfx in _SCALABLE_ICON_PATHS:   path = ':/icons/%s/%s%s' % (subdir, name, sfx)   if QFile.exists(path):   for mode in (QIcon.Normal, QIcon.Active):   o.addFile(path, size, mode)   if not o.isNull():   return o    def geticon(name):   """   Return a QIcon for the specified name. (the given 'name' parameter   must *not* provide the extension).     This searches for the icon from theme, Qt resource or icons directory,   named as 'name.(svg|png|ico)'.   """   if QIcon.hasThemeIcon(name):   return QIcon.fromTheme(name)     try:   return _iconcache[name]   except KeyError:   _iconcache[name] = (_findscalableicon(name) or _findicon(name)   or QIcon(':/icons/fallback.svg'))   return _iconcache[name]    if sys.platform == 'darwin':   # On Mac OS X, we do not want icons on menus   def getmenuicon(name):   return QIcon()  else:   getmenuicon = geticon      def getoverlaidicon(base, overlay):   """Generate an overlaid icon"""   pixmap = base.pixmap(16, 16)   painter = QPainter(pixmap)   painter.setCompositionMode(QPainter.CompositionMode_SourceOver)   painter.drawPixmap(0, 0, overlay.pixmap(16, 16))   del painter   return QIcon(pixmap)      _pixmapcache = {}    def getpixmap(name, width=16, height=16):   key = '%s_%sx%s' % (name, width, height)   try:   return _pixmapcache[key]   except KeyError:   pixmap = geticon(name).pixmap(width, height)   _pixmapcache[key] = pixmap   return pixmap    class ThgFont(QObject):   changed = pyqtSignal(QFont)   def __init__(self, name):   QObject.__init__(self)   self.myfont = QFont()   self.myfont.fromString(name)   def font(self):   return self.myfont   def setFont(self, f):   self.myfont = f   self.changed.emit(f)    _fontdefaults = {   'fontcomment': 'monospace,10',   'fontdiff': 'monospace,10',   'fontlist': 'sans,9',   'fontlog': 'monospace,10',   'fontoutputlog': 'sans,8'  }  if sys.platform == 'darwin':   _fontdefaults['fontoutputlog'] = 'sans,10'  _fontcache = {}    def initfontcache(ui):   for name in _fontdefaults:   fname = ui.config('tortoisehg', name, _fontdefaults[name])   _fontcache[name] = ThgFont(fname)    def getfont(name):   assert name in _fontdefaults   return _fontcache[name]    def gettranslationpath():   """Return path to Qt's translation file (.qm)"""   if getattr(sys, 'frozen', False):   return ':/translations'   else:   return QLibraryInfo.location(QLibraryInfo.TranslationsPath)    def CommonMsgBox(icon, title, main, text='', buttons=QMessageBox.Ok,   labels=[], parent=None, defaultbutton=None):   msg = QMessageBox(parent)   msg.setIcon(icon)   msg.setWindowTitle(title)   msg.setStandardButtons(buttons)   for button_id, label in labels:   msg.setButtonText(button_id, label)   if defaultbutton:   msg.setDefaultButton(defaultbutton)   msg.setText('<b>%s</b>' % main)   info = ''   for line in text.split('\n'):   info += '<nobr>%s</nobr><br />' % line   msg.setInformativeText(info)   return msg.exec_()    def InfoMsgBox(*args, **kargs):   return CommonMsgBox(QMessageBox.Information, *args, **kargs)    def WarningMsgBox(*args, **kargs):   return CommonMsgBox(QMessageBox.Warning, *args, **kargs)    def ErrorMsgBox(*args, **kargs):   return CommonMsgBox(QMessageBox.Critical, *args, **kargs)    def QuestionMsgBox(*args, **kargs):   btn = QMessageBox.Yes | QMessageBox.No   res = CommonMsgBox(QMessageBox.Question, buttons=btn, *args, **kargs)   return res == QMessageBox.Yes    class CustomPrompt(QMessageBox):   def __init__(self, title, message, parent, choices, default=None,   esc=None, files=None):   QMessageBox.__init__(self, parent)     self.setWindowTitle(hglib.tounicode(title))   self.setText(hglib.tounicode(message))   if files:   self.setDetailedText(hglib.tounicode('\n'.join(files)))   self.hotkeys = {}   for i, s in enumerate(choices):   btn = self.addButton(s, QMessageBox.AcceptRole)   try:   char = s[s.index('&')+1].lower()   self.hotkeys[char] = btn - if default == i: - self.setDefaultButton(btn) - if esc == i: - self.setEscapeButton(btn)   except (ValueError, IndexError):   pass + if default == i: + self.setDefaultButton(btn) + if esc == i: + self.setEscapeButton(btn)     def run(self):   return self.exec_()     def keyPressEvent(self, event):   for k, btn in self.hotkeys.iteritems():   if event.text() == k:   btn.clicked.emit(False)   super(CustomPrompt, self).keyPressEvent(event)    def setup_font_substitutions():   QFont.insertSubstitutions('monospace', ['monaco', 'courier new'])    def fix_application_font():   if os.name != 'nt':   return   try:   import win32gui, win32con   except ImportError:   return     # use configurable font like GTK, Mozilla XUL or Eclipse SWT   ncm = win32gui.SystemParametersInfo(win32con.SPI_GETNONCLIENTMETRICS)   lf = ncm['lfMessageFont']   f = QFont(hglib.tounicode(lf.lfFaceName))   f.setItalic(lf.lfItalic)   if lf.lfWeight != win32con.FW_DONTCARE:   weights = [(0, QFont.Light), (400, QFont.Normal), (600, QFont.DemiBold),   (700, QFont.Bold), (800, QFont.Black)]   n, w = filter(lambda e: e[0] <= lf.lfWeight, weights)[-1]   f.setWeight(w)   f.setPixelSize(abs(lf.lfHeight))   QApplication.setFont(f, 'QWidget')    class PMButton(QPushButton):   """Toggle button with plus/minus icon images"""     def __init__(self, expanded=True, parent=None):   QPushButton.__init__(self, parent)     size = QSize(11, 11)   self.setIconSize(size)   self.setMaximumSize(size)   self.setFlat(True)   self.setAutoDefault(False)     self.plus = geticon('expander-open')   self.minus = geticon('expander-close')   icon = expanded and self.minus or self.plus   self.setIcon(icon)     def clicked():   icon = self.is_expanded() and self.plus or self.minus   self.setIcon(icon)   self.clicked.connect(clicked)     def set_expanded(self, state=True):   icon = state and self.minus or self.plus   self.setIcon(icon)     def set_collapsed(self, state=True):   icon = state and self.plus or self.minus   self.setIcon(icon)     def is_expanded(self):   return self.icon().serialNumber() == self.minus.serialNumber()     def is_collapsed(self):   return not self.is_expanded()    class ClickableLabel(QLabel):     clicked = pyqtSignal()     def __init__(self, label, parent=None):   QLabel.__init__(self, parent)     self.setText(label)     def mouseReleaseEvent(self, event):   self.clicked.emit()    class ExpanderLabel(QWidget):     expanded = pyqtSignal(bool)     def __init__(self, label, expanded=True, stretch=True, parent=None):   QWidget.__init__(self, parent)     box = QHBoxLayout()   box.setSpacing(4)   box.setContentsMargins(*(0,)*4)   self.button = PMButton(expanded, self)   self.button.clicked.connect(self.pm_clicked)   box.addWidget(self.button)   self.label = ClickableLabel(label, self)   self.label.clicked.connect(lambda: self.button.click())   box.addWidget(self.label)   if not stretch:   box.addStretch(0)     self.setLayout(box)     def pm_clicked(self):   self.expanded.emit(self.button.is_expanded())     def set_expanded(self, state=True):   if not self.button.is_expanded() == state:   self.button.set_expanded(state)   self.expanded.emit(state)     def is_expanded(self):   return self.button.is_expanded()    class StatusLabel(QWidget):     def __init__(self, parent=None):   QWidget.__init__(self, parent)     box = QHBoxLayout()   box.setContentsMargins(*(0,)*4)   self.status_icon = QLabel()   self.status_icon.setMaximumSize(16, 16)   self.status_icon.setAlignment(Qt.AlignCenter)   box.addWidget(self.status_icon)   self.status_text = QLabel()   self.status_text.setAlignment(Qt.AlignVCenter | Qt.AlignLeft)   box.addWidget(self.status_text)   box.addStretch(0)     self.setLayout(box)     def set_status(self, text, icon=None):   self.set_text(text)   self.set_icon(icon)     def clear_status(self):   self.clear_text()   self.clear_icon()     def set_text(self, text=''):   if text is None:   text = ''   self.status_text.setText(text)     def clear_text(self):   self.set_text()     def set_icon(self, icon=None):   if icon is None:   self.clear_icon()   else:   if isinstance(icon, bool):   icon = geticon(icon and 'thg-success' or 'thg-error')   elif isinstance(icon, basestring):   icon = geticon(icon)   elif not isinstance(icon, QIcon):   raise TypeError, '%s: bool, str or QIcon' % type(icon)   self.status_icon.setShown(True)   self.status_icon.setPixmap(icon.pixmap(16, 16))     def clear_icon(self):   self.status_icon.setHidden(True)    class LabeledSeparator(QWidget):     def __init__(self, label=None, parent=None):   QWidget.__init__(self, parent)     box = QHBoxLayout()   box.setContentsMargins(*(0,)*4)     if label:   if isinstance(label, basestring):   label = QLabel(label)   box.addWidget(label)     sep = QFrame()   sep.setFrameShadow(QFrame.Sunken)   sep.setFrameShape(QFrame.HLine)   box.addWidget(sep, 1, Qt.AlignVCenter)     self.setLayout(box)    class InfoBar(QFrame):   """Non-modal confirmation/alert (like web flash or Chrome's InfoBar)     You shouldn't reuse InfoBar object after close(). It is automatically   deleted.     Layout::     |widgets ... |right widgets ...|x|   """   linkActivated = pyqtSignal(unicode)     # type of InfoBar (the number denotes its priority)   INFO = 1   ERROR = 2   CONFIRM = 3     infobartype = INFO     _colormap = {   INFO: '#e7f9e0',   ERROR: '#f9d8d8',   CONFIRM: '#fae9b3',   }     def __init__(self, parent=None):   super(InfoBar, self).__init__(parent, frameShape=QFrame.StyledPanel,   frameShadow=QFrame.Plain)   self.setAttribute(Qt.WA_DeleteOnClose)     self.setAutoFillBackground(True)   p = self.palette()   p.setColor(QPalette.Window, QColor(self._colormap[self.infobartype]))   p.setColor(QPalette.WindowText, QColor("black"))   self.setPalette(p)     self.setLayout(QHBoxLayout())   self.layout().setContentsMargins(2, 2, 2, 2)     self.layout().addStretch()   self._closebutton = QPushButton(self, flat=True, autoDefault=False,   icon=self.style().standardIcon(QStyle.SP_DockWidgetCloseButton))   self._closebutton.clicked.connect(self.close)   self.layout().addWidget(self._closebutton)     def addWidget(self, w, stretch=0):   self.layout().insertWidget(self.layout().count() - 2, w, stretch)     def addRightWidget(self, w):   self.layout().insertWidget(self.layout().count() - 1, w)     def keyPressEvent(self, event):   if event.key() == Qt.Key_Escape:   self.close()   super(InfoBar, self).keyPressEvent(event)    class StatusInfoBar(InfoBar):   """Show status message"""   def __init__(self, message, parent=None):   super(StatusInfoBar, self).__init__(parent)   self._msglabel = QLabel(message, self, wordWrap=True,   textInteractionFlags=Qt.TextSelectableByMouse)   self.addWidget(self._msglabel, stretch=1)    class CommandErrorInfoBar(InfoBar):   """Show command execution failure (with link to open log window)"""   infobartype = InfoBar.ERROR     def __init__(self, message, parent=None):   super(CommandErrorInfoBar, self).__init__(parent)     self._msglabel = QLabel(message, self, wordWrap=True,   textInteractionFlags=Qt.TextSelectableByMouse)   self.addWidget(self._msglabel, stretch=1)     self._loglabel = QLabel('<a href="log:">%s</a>' % _('Show Log'))   self._loglabel.linkActivated.connect(self.linkActivated)   self.addRightWidget(self._loglabel)    class ConfirmInfoBar(InfoBar):   """Show confirmation message with accept/reject buttons"""   accepted = pyqtSignal()   rejected = pyqtSignal()   infobartype = InfoBar.CONFIRM     def __init__(self, message, parent=None):   super(ConfirmInfoBar, self).__init__(parent)     # no wordWrap=True and stretch=1, which inserts unwanted space   # between _msglabel and _buttons.   self._msglabel = QLabel(message, self,   textInteractionFlags=Qt.TextSelectableByMouse)   self.addWidget(self._msglabel)     self._buttons = QDialogButtonBox(self)   self._buttons.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)   self.acceptButton = self._buttons.addButton(QDialogButtonBox.Ok)   self.rejectButton = self._buttons.addButton(QDialogButtonBox.Cancel)   self._buttons.accepted.connect(self._accept)   self._buttons.rejected.connect(self._reject)   self.addWidget(self._buttons)     # so that acceptButton gets focus by default   self.setFocusProxy(self._buttons)     def closeEvent(self, event):   if self.isVisible():   self.rejected.emit()   super(ConfirmInfoBar, self).closeEvent(event)     @pyqtSlot()   def _accept(self):   self.accepted.emit()   self.hide()   self.close()     @pyqtSlot()   def _reject(self):   self.rejected.emit()   self.hide()   self.close()    class WidgetGroups(object):   """ Support for bulk-updating properties of Qt widgets """     def __init__(self):   object.__init__(self)     self.clear(all=True)     ### Public Methods ###     def add(self, widget, group='default'):   if group not in self.groups:   self.groups[group] = []   widgets = self.groups[group]   if widget not in widgets:   widgets.append(widget)     def remove(self, widget, group='default'):   if group not in self.groups:   return   widgets = self.groups[group]   if widget in widgets:   widgets.remove(widget)     def clear(self, group='default', all=True):   if all:   self.groups = {}   else:   del self.groups[group]     def set_prop(self, prop, value, group='default', cond=None):   if group not in self.groups:   return   widgets = self.groups[group]   if callable(cond):   widgets = [w for w in widgets if cond(w)]   for widget in widgets:   getattr(widget, prop)(value)     def set_visible(self, *args, **kargs):   self.set_prop('setVisible', *args, **kargs)     def set_enable(self, *args, **kargs):   self.set_prop('setEnabled', *args, **kargs)    class TaskWidget(object):   def canswitch(self):   """Return True if the widget allows to switch away from it"""   return True     def canExit(self):   return True    class DemandWidget(QWidget):   'Create a widget the first time it is shown'     def __init__(self, createfuncname, createinst, parent=None):   super(DemandWidget, self).__init__(parent)   # We store a reference to the create function name to avoid having a   # hard reference to the bound function, which prevents it being   # disposed. Weak references to bound functions don't work.   self._createfuncname = createfuncname   self._createinst = weakref.ref(createinst)   self._widget = None   vbox = QVBoxLayout()   vbox.setContentsMargins(*(0,)*4)   self.setLayout(vbox)     def showEvent(self, event):   """create the widget if necessary"""   self.get()   super(DemandWidget, self).showEvent(event)     def forward(self, funcname, *args, **opts):   if self._widget:   return getattr(self._widget, funcname)(*args, **opts)   return None     def get(self):   """Returns the stored widget"""   if self._widget is None:   func = getattr(self._createinst(), self._createfuncname, None)   self._widget = func()   self.layout().addWidget(self._widget)   return self._widget     def canswitch(self):   """Return True if the widget allows to switch away from it"""   if self._widget is None:   return True   return self._widget.canswitch()     def canExit(self):   if self._widget is None:   return True   return self._widget.canExit()     def __getattr__(self, name):   return getattr(self._widget, name)    class Spacer(QWidget):   """Spacer to separate controls in a toolbar"""     def __init__(self, width, height, parent=None):   QWidget.__init__(self, parent)   self.width = width   self.height = height     def sizeHint(self):   return QSize(self.width, self.height)    def getCurrentUsername(widget, repo, opts=None):   if opts:   # 1. Override has highest priority   user = opts.get('user')   if user:   return user     # 2. Read from repository   try:   return repo.ui.username()   except error.Abort:   pass     # 3. Get a username from the user   QMessageBox.information(widget, _('Please enter a username'),   _('You must identify yourself to Mercurial'),   QMessageBox.Ok)   from tortoisehg.hgqt.settings import SettingsDialog   dlg = SettingsDialog(False, focus='ui.username')   dlg.exec_()   repo.invalidateui()   try:   return repo.ui.username()   except error.Abort:   return None