dabo Commit
Revision 6642
Date: 2011-06-30 04:04:20 -0700 (Thu, 30 Jun 2011)
Author: Jacekk
Trac: http://trac.dabodev.com/changeset/6642
Changed:
U trunk/dabo/ui/uiwx/dForm.py
Log:
Added the DataUpdateDelay property to control delay between business data
change and UI controls get updated.
When set to None, controls reflect immediately to the data changes.
To counteract performance degradation on large forms, the dPage.DeferredUpdates
property can be set to True.
Also, using dFrom methods like moveToRowNumber in loop without
delay should be avoided.
Diff:
Modified: trunk/dabo/ui/uiwx/dForm.py
===================================================================
--- trunk/dabo/ui/uiwx/dForm.py 2011-06-30 08:38:53 UTC (rev 6641)
+++ trunk/dabo/ui/uiwx/dForm.py 2011-06-30 11:04:20 UTC (rev 6642)
@@ -24,6 +24,7 @@
def __init__(self, preClass, parent, properties, attProperties, *args,
**kwargs):
self.bizobjs = {}
self._primaryBizobj = None
+ self._dataUpdateDelay = 100
# If this is True, a panel will be automatically added to the
# form and sized to fill the form.
@@ -107,7 +108,7 @@
func(message=msg, title=title)
- def update(self, interval=None):
+ def update(self, interval=100):
"""
Updates the contained controls with current values from the
source.
@@ -121,14 +122,14 @@
update. In these cases, pass an interval of 0 to this method,
which
means don't wait; execute now.
"""
- if interval is None:
- interval = 100
- if interval == 0:
+ if interval:
+ dabo.ui.callAfterInterval(interval, self.__update)
+ else:
self.__update()
- else:
- dabo.ui.callAfterInterval(interval, self.__update)
def __update(self):
+ self.lockDisplay()
super(BaseForm, self).update()
+ dabo.ui.callAfter(self.unlockDisplay)
def confirmChanges(self, bizobjs=None):
@@ -154,7 +155,7 @@
if bizobjs is None:
bizobjs = self.getBizobjsToCheck()
if not isinstance(bizobjs, (list, tuple)):
- bizList = (bizobjs, )
+ bizList = (bizobjs,)
else:
bizList = bizobjs
changedBizList = []
@@ -200,7 +201,7 @@
several. In those cases, override this method and return
a list of the
required bizobjs.
"""
- return (self.PrimaryBizobj, )
+ return (self.PrimaryBizobj,)
def addBizobj(self, bizobj):
@@ -272,7 +273,7 @@
dabo.ui.callAfter(self.raiseEvent,
dEvents.RowNumChanged,
newRowNumber=biz.RowNumber,
oldRowNumber=oldRowNum,
bizobj=biz)
- self.update()
+ self.update(self.DataUpdateDelay)
self.afterPointerMove()
self.refresh()
return True
@@ -445,9 +446,9 @@
bizobj.cancelAll(ignoreNoRecords=ignoreNoRecords)
else:
bizobj.cancel(ignoreNoRecords=ignoreNoRecords)
+ self.update(self.DataUpdateDelay)
self.setStatusText(_("Changes to %s canceled.") % (
self.SaveAllRows and "all records" or
"current record",))
- self.update()
except dException.NoRecordsException, e:
dabo.log.error(_("Cancel failed; no records to
cancel."))
except dException.dException, e:
@@ -493,10 +494,9 @@
# response = dProgressDialog.displayAfterWait(self, 2,
bizobj.requery)
response = bizobj.requery()
self.stopWatch.Pause()
- elapsed = round(self.stopWatch.Time()/1000.0, 3)
-
- self.update()
+ elapsed = round(self.stopWatch.Time() / 1000.0, 3)
# del busy
+ self.update(self.DataUpdateDelay)
newRowNumber = bizobj.RowNumber
if newRowNumber != oldRowNumber:
@@ -534,7 +534,6 @@
self.StatusText = ""
self.afterRequery()
- self.update()
self.refresh()
return ret
@@ -580,9 +579,9 @@
msg = ustr(e)
dabo.log.error(_("Delete failed with response:
%s") % msg)
self.notifyUser(msg, title=_("Deletion Not
Allowed"), severe=True, exception=e)
+ self.update(self.DataUpdateDelay)
self.afterDelete()
- self.update()
- self.refresh()
+ self.refresh()
def deleteAll(self, dataSource=None, message=None):
@@ -614,8 +613,8 @@
except dException.dException, e:
dabo.log.error(_("Delete All failed with
response: %s") % e)
self.notifyUser(ustr(e), title=_("Deletion Not
Allowed"), severe=True, exception=e)
+ self.update(self.DataUpdateDelay)
self.afterDeleteAll()
- self.update()
self.refresh()
@@ -643,10 +642,9 @@
self.setStatusText(statusText)
# Notify listeners that the row number changed:
+ self.update(self.DataUpdateDelay)
self.raiseEvent(dEvents.RowNumChanged)
-
self.afterNew()
- self.update()
self.refresh()
@@ -664,7 +662,7 @@
return _("""The connection to the database has closed for
unknown reasons.
Any unsaved changes to the data will be lost.
-Database error message: %s""") % err
+Database error message: %s""") % err
def getBizobj(self, dataSource=None, parentBizobj=None):
@@ -772,7 +770,7 @@
else:
rowCount = bizobj.RowCount
if rowCount > 0:
- rowNumber = bizobj.RowNumber+1
+ rowNumber = bizobj.RowNumber + 1
else:
rowNumber = 1
if rowCount < 1:
@@ -846,6 +844,13 @@
self._checkForChanges = bool(value)
+ def _getDataUpdateDelay(self):
+ return self._dataUpdateDelay
+
+ def _setDataUpdateDelay(self, val):
+ self._dataUpdateDelay = val
+
+
def _getPrimaryBizobj(self):
"""
The attribute '_primaryBizobj' should be a bizobj, but due
@@ -905,17 +910,24 @@
If True (the default), when operations such as
requery() or the closing
of the form are about to occur, the user will be
presented with a dialog
box asking whether to save changes, discard changes, or
cancel the
- operation that led to the dialog being presented.""") )
+ operation that led to the dialog being presented."""))
+ DataUpdateDelay = property(_getDataUpdateDelay, _setDataUpdateDelay,
None,
+ _("""Specifies synchronization delay in data updates
from business
+ to UI layer. (int)
+
+ Set to 'none' to ensure controls reflect immediately to
the data changes.
+ The default delay is 100 [ms]."""))
+
PrimaryBizobj = property(_getPrimaryBizobj, _setPrimaryBizobj, None,
- _("Reference to the primary bizobj for this form
(dBizobj)") )
+ _("Reference to the primary bizobj for this form
(dBizobj)"))
RequeryOnLoad = property(_getRequeryOnLoad, _setRequeryOnLoad, None,
_("""Specifies whether an automatic requery happens
when the
form is loaded. (bool)"""))
SaveAllRows = property(_getSaveAllRows, _setSaveAllRows, None,
- _("Specifies whether dataset is row- or table-buffered.
(bool)") )
+ _("Specifies whether dataset is row- or table-buffered.
(bool)"))
@@ -1006,7 +1018,7 @@
"""))
Visible = property(_getVisible, _setVisible, None,
- _("Specifies whether the form is shown or hidden.
(bool)") )
+ _("Specifies whether the form is shown or hidden.
(bool)"))
@@ -1067,7 +1079,7 @@
dabo.ui.callAfter(self.setSize)
def setSize(self):
- self.Width, self.Height = self.btn.Width+60, self.btn.Height+60
+ self.Width, self.Height = self.btn.Width + 60, self.btn.Height
+ 60
self.layout()
self.Centered = True
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