I don't understand how QTable::editCell() should be used. I am trying to do some error checking based on entries made by user in a QTable as mentioned in my another question.
I would like to give user an opportunity to re-edit the cell which has error. For example, if name column entry has some special characters such as '(', the user should be prompted for the error and the control should go back to same cell in edit mode. I tried using QTable::editCell() in my code as shown below.
Table->editCell(row, 0, TRUE);
name = Table->text(row, 0);
However, this doesn't work as expected. The control doesn't stay in the cell at all and obviously the name is not correctly collected. So, my question is how to ensure from within code that a cell of QTable can be edited so that the edited contents can be accessed immediately in next statement (as shown in above code).
Note: I am working with qt 3.3.8 only.
I don't think you can do that. You'll have to go back to the event loop, and wait for one of the signals (like valueChanged(row,col)) to be fired to re-validate the data.
A blocking wait on a GUI object is often not a good approach (except for modal dialogs).
I know I'm a little late here but you should use the following connect statement with your own custom function to do your specific needs such as below. You can also use this method to disable users from entering in special characters within you custom function. That way they wont ever have to correct undesirable characters.
connect(ui->tableWidget, SIGNAL(cellChanged(int,int)), this, SLOT(customFunction(int,int)));
void updateTable
{
//remove invalid characters
}
Related
I'm trying to set up a text widget that highlights the searched word, when I open a new file with QPlainText::setDocument, then immediately use QPlainText::setExtraSelections I get a SIGSEV crash in:
QTextDocumentPrivate::rootFrame
QTextDocumentPrivate::frameAt
QTextCursorPrivate::complexSelectionTable
QTextCursor::hasComplexSelection
QWidgetTextControl::selectionRect
QWidgetTextControl::setExtraSelections
QTextDocumentPrivate is causing a SIGSEV because it is a null this pointer. But this doesn't happen if no word is set before the document is loaded.
I must be supposed to do something to force it to generate the QTextDocumentPrivate. But I have no idea what that is.
Actually, this happens because QPlainText::setDocument does not remove the prior results of QPlainText::setExtraSelections. So when setting the new selections tries to remove the previous things selected, they all have invalid pointers and that causes the crash.
To fix it call: textEdit->setExtraSelections({}); to clear out the selections prior to calling QPlainText::setDocument.
I don't understand how to make the Client ui aware of a server side change in a document.
My use case is the following : I'm adding a button to my form, that calls a custom document method :
In MyDocType.py, I have :
class MyDocType(Document):
#frappe.whitelist()
def change_some_value_in_doc(self):
self.the_field_i_want_to_change = 50
It work in the sense that the_field_i_want_to_change is immediately updated to the new value.
However, If I hit Save, I get the message "No changes in document". I managed to determine that this is because on the JS side, the form is not marked as "dirty", but despite reading the documentation over and over, I cannot find the right way.
I tried with self.notify_update() which seems to have no effect.
Is it a bug ? Or am I misunderstanding how this is supposed to work ?
I'm using frappe v 14.0.0-beta.3
[EDIT]
Actually, I realized that doing
class MyDocType(Document):
#frappe.whitelist()
def change_some_value_in_doc(self):
self.the_field_i_want_to_change = 50
self.save()
Does work in the sense that it save the new value, but it's not exactly what I'm looking for, because my purpose is actually to pre-fill some data with the custom method and leave to the user to complete before saving...
Any help to get me in the right direction would be very appreciated.
To pre-fill data in your form - that you want the user to confirm before saving to the database, you should use client-side scripting (in JS). Changing the value on the server is not going to help you since you want the user to get pre-filled values before inserting a record in the database.
Tokenize2 is a javacsript lib to select multiple options.
It provides a very neat UI to start writing and then get a list of options to select from. Selected options will show up as "tags" that can be removed with "x" link.
So far all is fine. But Right now you need to know what your looking for and start write at least one character to see matching alternatives.
In my scenario there are very few alternatives and they are not known to the user. I would like to show ALL options when the user clicks the input box. There is a configuration option named searchMinLength but it is already set to 0.
Is there a workaround that can be used? Maybe like triggering load and dropdown manually?
I know there are a lot of similar alternatives but I picked Tokenize2 because:
It looks clean and nice
It works in mobile browsers
I don't know if there is an "official" approach, but after some investigation I have found an acceptable workaround.
After downloading the Tokenizer2 sourceode I found the following line that triggered my attention:
if(this.input.val().length > 0){
this.trigger('tokenize:search', [this.input.val()]);
}
My interpretation is that the internal search command is not triggered unless the user input has at least one character. This line in sourcecode could easily be modified. I have filed a suggestion for this here: https://github.com/zellerda/Tokenize2/issues/26
My current workaround is to add an event listener for the select event and there trigger the internal search command. That works fine for my scenario and does not force a source code rewrite.
$("#my-dropdown").on("tokenize:select", function (e: Event, routedEvent: boolean) {
$("#my-dropdown").trigger('tokenize:search', "");
});
Tokenize2
This link worked for me GitHub
$('.tokenize-sample-demo1').on('tokenize:select', function(container){
$(this).tokenize2().trigger('tokenize:search', [$(this).tokenize2().input.val()]);
});
I want to get event entries by their description (data).
I know how to get the event entry with a certain description, however I want to get an entry whith a description which contains a string (not equals to it).
That, I don't know how to do.
Please help :)
According to my answer here: https://stackoverflow.com/a/34119006/5089204 you should be able to retrieve EventRecords.
Dealing with these events is a quite complex issue... Each event has its own internal structure. The common properties are bundled in EventRecord, but the specific data must be taken from the internal details. Use the ToXml() method of an EventRecord...
In order to get the right events you must define an EventLogQuery. You must know the Provider's name and specify the filter.
Try the following: Open eventvwr and there the Windows-System queue. Right click one event, open the "Details" and choose the "XML-View". Look over different events and you will find, that they are quite differing.
But: You'll find everything you need there: First the "Provider Name" and the "EventId", these two are most important for the `EventLogQuery'.
Now go to the "define a user filter on the current protocoll"-action and type in some values. Then switch to the filter's XML and you'll learn how to define the correct query.
I'm sorry, there is no "easy and general" approach :-)
This code is from a program I use to enter and track information. Numbers are entered as work orders (WO) to track clients. But one of the tables is duplicating the WO information. So I was trying to figure out a general outline of what this code is saying so that the problem can be fixed.
Here is the original line:
wc.dll?x3~emproc~datarecord~&ACTION=DISPLAY&TABLE+WORK&KEYVALUE=<%work.wo%&KEYFIELD=WO
What I think I understand of it so far, and I could be very wrong, is:
wc.dll?x3~emproc~datarecord~&ACTION
//No clue because don't know ~ means or using & (connects?Action)
=DISPLAY&TABLE+WORK&KEYVALUE
//Display of contents(what makes it pretty) and the value inside the table at that slot
=<work.wo%&KEYFIELD
//Calling the work from the WO object
=WO
//is Assigning whatever was placed into the WO field into the left side of the statement
I'll do my best to interpret the statement, with the limited information you've provided:
wc.dll is an instruction to invoke a DLL
? is introducing a list of parameters (like a query string in HTTP)
x3~emproc~datarecord~ seems like a reference to a function in the dll
& parameter separator
ACTION=DISPLAY set the ACTION parameter to the value DISPLAY
TABLE+WORK perhaps sets a couple of flags
KEYVALUE=<%work.wo% set the KEYVALUE parameter to the value of <%work.wo%
KEYFIELD=WO set the KEYFIELD parameter to the value WO
Hope that helps.