@ -283,19 +283,9 @@ def filename_field(parent, config, defaultname, select_msg):
return vbox , filename_e , b1
class EditableItem ( QTreeWidgetItem ) :
def __init__ ( self , columns ) :
QTreeWidgetItem . __init__ ( self , columns )
self . setFlags ( self . flags ( ) | Qt . ItemIsEditable )
class EditableItemDelegate ( QStyledItemDelegate ) :
class ElectrumItemDelegate ( QStyledItemDelegate ) :
def createEditor ( self , parent , option , index ) :
if index . column ( ) not in self . parent ( ) . editable_columns :
return None
self . parent ( ) . editing = ( self . parent ( ) . currentItem ( ) ,
index . column ( ) ,
unicode ( index . data ( ) . toString ( ) ) )
return QStyledItemDelegate . createEditor ( self , parent , option , index )
return self . parent ( ) . createEditor ( parent , option , index )
class MyTreeWidget ( QTreeWidget ) :
@ -305,23 +295,20 @@ class MyTreeWidget(QTreeWidget):
self . parent = parent
self . stretch_column = stretch_column
self . setContextMenuPolicy ( Qt . CustomContextMenu )
self . itemActivated . connect ( self . on_activated )
self . customContextMenuRequested . connect ( create_menu )
self . setUniformRowHeights ( True )
# extend the syntax for consistency
self . addChild = self . addTopLevelItem
self . insertChild = self . insertTopLevelItem
# Control which columns are editable
self . editing = ( None , None , None )
self . editor = None
if editable_columns is None :
editable_columns = [ stretch_column ]
self . editable_columns = editable_columns
self . setEditTriggers ( QAbstractItemView . DoubleClicked |
QAbstractItemView . EditKeyPressed )
self . setItemDelegate ( EditableItemDelegate ( self ) )
self . itemChanged . connect ( self . item_changed )
self . setItemDelegate ( ElectrumItemDelegate ( self ) )
self . itemActivated . connect ( self . on_activated )
self . update_headers ( headers )
self . setSortingEnabled ( True )
def update_headers ( self , headers ) :
self . setColumnCount ( len ( headers ) )
@ -331,26 +318,61 @@ class MyTreeWidget(QTreeWidget):
sm = QHeaderView . Stretch if col == self . stretch_column else QHeaderView . ResizeToContents
self . header ( ) . setResizeMode ( col , sm )
def on_activated ( self , item ) :
if not item :
return
for i in range ( 0 , self . viewport ( ) . height ( ) / 5 ) :
if self . itemAt ( QPoint ( 0 , i * 5 ) ) == item :
break
def editItem ( self , item , column ) :
if column in self . editable_columns :
self . editing_itemcol = ( item , column , unicode ( item . text ( column ) ) )
# Calling setFlags causes on_changed events for some reason
item . setFlags ( item . flags ( ) | Qt . ItemIsEditable )
QTreeWidget . editItem ( self , item , column )
item . setFlags ( item . flags ( ) & ~ Qt . ItemIsEditable )
def keyPressEvent ( self , event ) :
if event . key ( ) == Qt . Key_F2 :
self . on_activated ( self . currentItem ( ) , self . currentColumn ( ) )
else :
return
for j in range ( 0 , 30 ) :
if self . itemAt ( QPoint ( 0 , i * 5 + j ) ) != item :
break
self . emit ( SIGNAL ( ' customContextMenuRequested(const QPoint&) ' ) , QPoint ( 50 , i * 5 + j - 1 ) )
QTreeWidget . keyPressEvent ( self , event )
def item_changed ( self , item , column ) :
''' Called only when the text actually changes '''
# Only pass user edits to item_edited()
if item == self . editing [ 0 ] and column == self . editing [ 1 ] :
self . item_edited ( item , column , self . editing [ 2 ] )
def permit_edit ( self , item , column ) :
return ( column in self . editable_columns
and self . on_permit_edit ( item , column ) )
def on_permit_edit ( self , item , column ) :
return True
def on_activated ( self , item , column ) :
if self . permit_edit ( item , column ) :
self . editItem ( item , column )
else :
pt = self . visualItemRect ( item ) . bottomLeft ( )
pt . setX ( 50 )
self . emit ( SIGNAL ( ' customContextMenuRequested(const QPoint&) ' ) , pt )
def createEditor ( self , parent , option , index ) :
self . editor = QStyledItemDelegate . createEditor ( self . itemDelegate ( ) ,
parent , option , index )
self . editor . connect ( self . editor , SIGNAL ( " editingFinished() " ) ,
self . editing_finished )
return self . editor
def editing_finished ( self ) :
# Long-time QT bug - pressing Enter to finish editing signals
# editingFinished twice. If the item changed the sequence is
# Enter key: editingFinished, on_change, editingFinished
# Mouse: on_change, editingFinished
# This mess is the cleanest way to ensure we make the
# on_edited callback with the updated item
if self . editor :
( item , column , prior_text ) = self . editing_itemcol
if self . editor . text ( ) == prior_text :
self . editor = None # Unchanged - ignore any 2nd call
elif item . text ( column ) == prior_text :
pass # Buggy first call on Enter key, item not yet updated
else :
# What we want - the updated item
self . on_edited ( * self . editing_itemcol )
self . editor = None
def item_edited ( self , item , column , prior ) :
def on _edited( self , item , column , prior ) :
''' Called only when the text actually changes '''
key = str ( item . data ( 0 , Qt . UserRole ) . toString ( ) )
text = unicode ( item . text ( column ) )
Neil Booth
9 years ago