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IDProjectCategoryView StatusLast Update
0019846LazarusIDEpublic2012-03-10 15:21
ReporterT. Kirsch Assigned ToJuha Manninen  
Status resolvedResolutionfixed 
Product Version0.9.30 
Summary0019846: SourceEditor context menu for tabs [was: Two minor issues with the tabs of the source-editor]
DescriptionThis issue was created to split the related "dual report" 0019845
Additional InformationSecond, a somewhat related issue with the source-editor tabs:

In Windows (don't know how it's done elsewhere), a context menu's context - if invoked by a mouse click - is usually given by the mouse position. For tabbed applications this means that you get the context menu of the tab you've clicked on (i.e. of the item that's associated with that tab - a file, a web site, whatever), not of the tab that was active before the click.

The most straightforward way to achieve this is to treat a right click as if it was preceded by a left clĂ­ck - first the clicked tab becomes the active tab, then the pop-up menu is fired. That's how it looks in UltraEdit or VisualStudio (and probably in Delphi, too - haven't worked with that in many years). Would be nice (and muchh less confusing) if Lazarus could also work this way.

Just as a reminder: Making the clicked tab the active tab is good for an editor, but may not be desirable in other applications (Firefox for instance shows the tab's context menu without activating/showing its web page beforehand), therefore it shouldn't be the general behaviour of a tab control.
TagsNo tags attached.
Fixed in Revision
Attached Files


related to 0019845 resolvedMartin Friebe Left click righ-most tab, mat select wrong tab [was Two minor issues with the tabs of the source-editor] 
related to 0001828 closedPaul Ishenin Right Click in Source Editor Window not consistent with Windows standards. 


T. Kirsch

2011-08-25 19:36

reporter   ~0051124

I've just noticed that this bug is related to an already resolved (no change required) issue. I beg to differ with the "no change required" bit:

When it comes to the editor tabs, Lazarus does *not* follow Microsoft's guidelines (which is the closest you get to a Windows standard) for context menus:

"Use context menus only for contextual commands and options. The menu items should apply only to the selected (or clicked upon) object or window region, not the entire program."

The clicked upon object is the tab, therefore the menu items should apply to that tab (i.e. to the file identified by it) - and not to the file currently shown in the editor's window.

I'm working with Windows for more than a decade and Lazarus is the first application I came across that doesn't follow this standard/guideline. And that's highly confusing, to say the least.

The only question is how to do it: don't activate the tab but show its context menu or activate the tab first and then show the menu. The former is usually done if activation is time consuming (like showing a webpage in Firefox), the latter is done in all other cases (because it gives better visual feedback). Most editors (including Delphi) do activate the clicked upon tab before they show the context menu.

Juha Manninen

2012-03-04 22:52

developer   ~0057274

Now the question is why the tabs behave differently on Windows and GTK2?
I think there is no popup menu associated with the tabs.
GTK2 standard behavior is then to show a list of available tabs.
Windows standard behavior is to show the active editor's popup menu which is not good in this case.

I try to find where the tabs are created and change it somehow.

Juha Manninen

2012-03-05 11:37

developer   ~0057275

The behavior was not automatic, it was clearly done wrong. I don't know why the other similar issue was solved as "no change required".

I improved it in r35725 by splitting the big popup menu into 2 menus, one for the tab and one for the editor. The tab is also selected when right-clicked.
I will resolve this after getting some feedback.

Martin Friebe

2012-03-05 13:49

manager   ~0057280

Last edited: 2012-03-05 14:10

I find it very inconvenient, that items like move/copy window are now limited to the tab.

While I agree with the reduced menu for tabs, I thing all items should be shown in the pop up for the editor

"Open File" > "Open File at cursor" makes more sense in the editor, than on the tab, but now is on the tab

unrelated but since we are on it. Should the "Find" entries come after the clipboard section?

Martin Friebe

2012-03-05 14:08

manager   ~0057282

On Windows, if the tab-scroll arrows are visible (more tabs than fit the screen), then right click such tabs will select the left most tab.

If the left most tab was already selected and scrolled out of view, then it is kept selected, but not scrolled into view (doesn't matter, as it should not be selected...)

To reproduce, it is important that the arrows do not overlap with the rightmost tab.
This can be archived by scrolling the right most tab into view, and closing any of the visible tabs (make sure ther are enough tabs, so the arrows remain visible), then there will be a gap between the right most tab and the arrows

(The gap correctly has no pop up, clicks on the gap go to the form)

Juha Manninen

2012-03-05 14:36

developer   ~0057284

Last edited: 2012-03-05 14:48

> I find it very inconvenient, that items like move/copy window are now limited to the tab.

You are right. In r35733 I moved the menuitems dealing with editor files to the editor menu.
Now the tab's popup menu has only items that deal with tab-pages and that don't need to know anything about the files.

If you want all the items shown in the editor's menu, it is ok for me.
Then I must ask how to reuse the same TIDEMenuCommands? Or should the commands be redeclared?

Juha Manninen

2012-03-05 14:46

developer   ~0057285

> On Windows, if the tab-scroll arrows are visible (more tabs than fit the screen), then right click such tabs will select the left most tab.

What widgetset? I have tested on Windows and Linux-GTK2 and the selection works very well.
The new PageIndex is got like this:

SourceEditor.pp, line 5401.

Martin Friebe

2012-03-05 15:15

manager   ~0057286

Last edited: 2012-03-05 15:21

> Then I must ask how to reuse the same TIDEMenuCommands? Or should the commands be redeclared?

Look at the debug popup

MAybe wait for others feedback. Smaller menu has advantages too.


> What widgetset?
win 32 / vista

If you try it, make sure the 2 scroll arrows (on the right of the tab) do not overlap a tab.

- Open 10 tabs (of which 5 are visible)
- go to the rightmost tab (t 10)
  it may overlap with the arrows
- close tab 9

Now there us a gap between the last tab and the arrows
- right click the arrows


IMHO, the order should be adjusted
- clipboard
- find
- file

Juha Manninen

2012-03-05 16:08

developer   ~0057288

I forgot to copy the editor popup's update to the right function. I fixed it and changed the order of clipboard + other sections.

> - right click the arrows

Ok, TabIndexAtClientPos returns -1 then. I added a check for it. Now the menu works with the already-selected tab.

Yes, I like a smaller menu without duplicates. Please test and give feedback people.

Juha Manninen

2012-03-10 15:21

developer   ~0057462

I also added the list of editor files to the tab's popup menu. It replicates the old GTK2 behavior, but does it on every platform.
Please test.

Issue History

Date Modified Username Field Change
2011-07-31 20:24 Martin Friebe New Issue
2011-07-31 20:24 Martin Friebe LazTarget => -
2011-07-31 20:24 Martin Friebe Widgetset => Win32/Win64
2011-07-31 20:24 Martin Friebe Issue generated from: 0019845
2011-07-31 20:24 Martin Friebe Relationship added related to 0019845
2011-07-31 20:25 Martin Friebe Reporter Martin Friebe => T. Kirsch
2011-08-15 02:44 Martin Friebe Relationship added related to 0001828
2011-08-25 19:36 T. Kirsch Note Added: 0051124
2011-10-06 15:00 Vincent Snijders Status new => acknowledged
2012-03-04 22:52 Juha Manninen Note Added: 0057274
2012-03-05 11:32 Juha Manninen Status acknowledged => assigned
2012-03-05 11:32 Juha Manninen Assigned To => Juha Manninen
2012-03-05 11:37 Juha Manninen Note Added: 0057275
2012-03-05 11:37 Juha Manninen Status assigned => feedback
2012-03-05 13:49 Martin Friebe Note Added: 0057280
2012-03-05 13:50 Martin Friebe Note Edited: 0057280
2012-03-05 14:08 Martin Friebe Note Added: 0057282
2012-03-05 14:10 Martin Friebe Note Edited: 0057280
2012-03-05 14:36 Juha Manninen Note Added: 0057284
2012-03-05 14:38 Juha Manninen Note Edited: 0057284
2012-03-05 14:46 Juha Manninen Note Added: 0057285
2012-03-05 14:48 Juha Manninen Note Edited: 0057284
2012-03-05 15:15 Martin Friebe Note Added: 0057286
2012-03-05 15:21 Martin Friebe Note Edited: 0057286
2012-03-05 16:08 Juha Manninen Note Added: 0057288
2012-03-10 15:21 Juha Manninen Status feedback => resolved
2012-03-10 15:21 Juha Manninen Resolution open => fixed
2012-03-10 15:21 Juha Manninen Note Added: 0057462