Re: RecentManager

[g4hx <g4hx gmx de>]

On 11/01/2012 01:17 PM, Kjell Ahlstedt wrote:
> 2012-10-31 17:20, g4hx skrev:
>> On 10/31/2012 04:50 PM, Kjell Ahlstedt wrote:
>>> RecentManager::get_default() gets a RecentManager where all programs can
>>> save recently used files. Usually it's not empty. Word processors, text
>>> editors and all kinds of programs may have saved names of recently used
>>> files there. The information is saved in a file, on my PC in file
>>> ~/.local/share/recently-used.xbel. I don't think there's any guarantee
>>> that your newly saved file name will be the first one in the vector that
>>> RecentManager::get_items() returns, but it should be somewhere in that
>>> vector.
>>>
>>> I'm don't know why you don't find your file name in a FileChooserDialog.
>>> Do you use a filter that hides it? Have you looked through the whole
>>> list of files in the dialog, and not just the first few entries?
>>>
>>> Kjell
>>>
>>> 2012-10-31 14:51, g4hx skrev:
>>>> Hello all,
>>>>
>>>> I am trying to include a RecentManager in my program but so far I am
>>>> utterly failing to do it. I have the following code to add a file
>>>> obtained by a FileChooserDialog to the recent files list:
>>>>
>>>>     Glib::RefPtr<RecentManager> mgr = RecentManager::get_default();
>>>>
>>>>     if(!mgr->add_item(dialog.get_uri()))
>>>>       g_warning("Could not add item to recent files");
>>>>
>>>> If I understand correctly, then a subsequent statement of the type
>>>>
>>>>     g_warning("%s", mgr->get_items()[0]->get_uri().raw().c_str());
>>>>
>>>> should return the URI that I passed to the RecentManager. Only this
>>>> is not the case, instead the warning prints another file to the
>>>> terminal. Also the file does not show up in any FileChooserDialog.
>>>> What am I doing wrong?
>>>>
>>>> g4hx
>>>>
>>>
>> Well, I have a filter in all my dialogs which permits only xml files.
>> I removed the recently-used.xbel. After that the call to mgr->get_items
>> results in a SEGFAULT, since there are no entries at all.
>>
>> How can I set up a RecentManager for my application only?
>>
>> g4hx
>>
> Gtk::RecentManager::add_item() calls the gtk+ function
> gtk_recent_manager_add_item(). That function always returns true, and
> does most of its job asynchronosly, meaning that when the function
> returns, its job has probably not been finished.
> If you call get_items() immediately after add_item(), the newly added
> item might not be included in the returned vector. It's much safer to
> connect to signal_changed() and call get_items() in your signal handler.
> 
> The documentation does not mention that add_item() works asynchonously,
> neither the documentation in gtk+ nor in gtkmm.
> 
> To set up a RecentManager for your application only, you need to create
> your own RecentManager, i.e. call Gtk::RecentManager::create() instead
> of get_default(). You must set a filename, where your RecentManager
> shall save its information, or else it will use the default file that
> most other programs use. BUT, that does not seem to be possible, using
> Gtk::RecentManager. There is a property_filename(), but it's read-only.
> The property 'filename' in the gtk+ class GtkRecentManager is
> construct-only, meaning it can only be given a value when the object is
> constructed. I think something is missing in gtkmm.
> Gtk::RecentManager::create() should have a 'filename' parameter.
> 
> Kjell
> 

Well, you're right, after some time the items seem to show up. It is
unfortunate that it is impossible to use your own RecentManager...

g4hx