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Bug #5279

Catching double click in WTableCell

Added by Gunnar Skogsholm about 6 years ago. Updated over 5 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Target version:
Start date:
09/20/2016
Due date:
% Done:

0%

Estimated time:

Description

I derived classes from both WTable and WTableCell. I added createCell to keep track of the grid row/column information.

Wt::WTableCell* WtTable::createCell( int row, int column )

{

//return new Wt::WTableCell();

return new WtTableCell( *view, row, column );

Should this work?

#1

Updated by Gunnar Skogsholm about 6 years ago

class WtTableCell : public Wt::WTableCell

{

private:

DataView* view;

int Row;

int Column;

public:

WtTableCell( DataView& TheView, int row, int column );

void double_click( const Wt::WMouseEvent& e );

};

#2

Updated by Gunnar Skogsholm about 6 years ago

@WtTableCell::WtTableCell( DataView& TheView, int row, int column )

: view( &TheView ),

Row( row ),

Column( column )

{

doubleClicked().connect( this, &WtTableCell::double_click );

}

void WtTableCell::double_click( const Wt::WMouseEvent& e )

{

@

#3

Updated by Gunnar Skogsholm about 6 years ago

I've narrowed it down to the row value being passed in as: 0xffffffff

The Wt function rowNum seems to be culprit.

WTableCell *WTableRow::createCell(int column)

{

return table_->createCell(rowNum(), column);

}

#4

Updated by Gunnar Skogsholm about 6 years ago

I'm stuck on this point. There is simply not enough documentation about how cells get created.

This function is getting called multiple times with row basically set to --1 (0xffffffff). I thought maybe this was for a header row, but it happens whether I call setHeaderCount or not. Even if it were for a header, why more than one?

#5

Updated by Gunnar Skogsholm about 6 years ago

Frustrated to not get any response. Searching wt examples, createCell is never used. Should I not be using this approach:

auto tableCell = gridCtl->elementAt( Rec, left() ); // triggers WtTable::createCell

tableCell->addWidget( staticWnd );

In the debugger, I see that createCell is called multiple times for one call to elementAt. I realize that it's expanding to fill cells up to where I've accessed. However, if I start with 0,0 which calls CreateCell with 0,0, then later call elementAt(1,0), I would not expect it to call CreateCell with 0,0 again.

It appears to be a bug, but I could be looking at this all wrong. ANY help would be greatly appreciated.

#6

Updated by Koen Deforche about 6 years ago

  • Assignee set to Koen Deforche

Hey,

Can you see if the following changes fixes this for you:

swap the two lines:

  tableRow->expand(columnCount());
  rows_.insert(rows_.begin() + row, tableRow);

at (approx. lines 114-115) in

  WTable::insertRow(int row, WTableRow *tableRow)

If this doesn't help, can you provide a small self-contained example that illustrates the problem?

#7

Updated by Gunnar Skogsholm about 6 years ago

This change fixed the issue I was seeing. There are no --1s being passed in now. All is well. Thank you so much!

#8

Updated by Koen Deforche about 6 years ago

  • Tracker changed from Support to Bug
  • Status changed from New to Implemented @Emweb
  • Target version set to 3.3.7
#9

Updated by Koen Deforche about 6 years ago

  • Status changed from Implemented @Emweb to Resolved
#10

Updated by Roel Standaert over 5 years ago

  • Status changed from Resolved to Closed

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