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pcmanfm-qt-packaging/libfm-qt/appchoosercombobox.cpp

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/*
* <one line to give the library's name and an idea of what it does.>
* Copyright (C) 2014 <copyright holder> <email>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "appchoosercombobox.h"
#include "icontheme.h"
#include "appchooserdialog.h"
#include "utilities.h"
namespace Fm {
AppChooserComboBox::AppChooserComboBox(QWidget* parent):
QComboBox(parent),
defaultApp_(NULL),
appInfos_(NULL),
defaultAppIndex_(-1),
prevIndex_(0),
mimeType_(NULL),
blockOnCurrentIndexChanged_(false) {
// the new Qt5 signal/slot syntax cannot handle overloaded methods by default
// hence a type-casting is needed here. really ugly!
// reference: http://qt-project.org/forums/viewthread/21513
connect((QComboBox*)this, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &AppChooserComboBox::onCurrentIndexChanged);
}
AppChooserComboBox::~AppChooserComboBox() {
if(mimeType_)
fm_mime_type_unref(mimeType_);
if(defaultApp_)
g_object_unref(defaultApp_);
// delete GAppInfo objects stored for Combobox
if(appInfos_) {
g_list_foreach(appInfos_, (GFunc)g_object_unref, NULL);
g_list_free(appInfos_);
}
}
void AppChooserComboBox::setMimeType(FmMimeType* mimeType) {
clear();
if(mimeType_)
fm_mime_type_unref(mimeType_);
mimeType_ = fm_mime_type_ref(mimeType);
if(mimeType_) {
const char* typeName = fm_mime_type_get_type(mimeType_);
defaultApp_ = g_app_info_get_default_for_type(typeName, FALSE);
appInfos_ = g_app_info_get_all_for_type(typeName);
int i = 0;
for(GList* l = appInfos_; l; l = l->next, ++i) {
GAppInfo* app = G_APP_INFO(l->data);
GIcon* gicon = g_app_info_get_icon(app);
QString name = QString::fromUtf8(g_app_info_get_name(app));
// QVariant data = qVariantFromValue<void*>(app);
// addItem(IconTheme::icon(gicon), name, data);
addItem(IconTheme::icon(gicon), name);
if(g_app_info_equal(app, defaultApp_))
defaultAppIndex_ = i;
}
}
// add "Other applications" item
insertSeparator(count());
addItem(tr("Customize"));
if(defaultAppIndex_ != -1)
setCurrentIndex(defaultAppIndex_);
}
// returns the currently selected app.
GAppInfo* AppChooserComboBox::selectedApp() {
return G_APP_INFO(g_list_nth_data(appInfos_, currentIndex()));
}
bool AppChooserComboBox::isChanged() {
return (defaultAppIndex_ != currentIndex());
}
void AppChooserComboBox::onCurrentIndexChanged(int index) {
if(index == -1 || index == prevIndex_ || blockOnCurrentIndexChanged_)
return;
// the last item is "Customize"
if(index == (count() - 1)) {
/* TODO: let the user choose an app or add custom actions here. */
QWidget* toplevel = topLevelWidget();
AppChooserDialog dlg(mimeType_, toplevel);
dlg.setWindowModality(Qt::WindowModal);
dlg.setCanSetDefault(false);
if(dlg.exec() == QDialog::Accepted) {
GAppInfo* app = dlg.selectedApp();
if(app) {
/* see if it's already in the list to prevent duplication */
GList* found = NULL;
for(found = appInfos_; found; found = found->next) {
if(g_app_info_equal(app, G_APP_INFO(found->data)))
break;
}
// inserting new items or change current index will recursively trigger onCurrentIndexChanged.
// we need to block our handler to prevent recursive calls.
blockOnCurrentIndexChanged_ = true;
/* if it's already in the list, select it */
if(found) {
setCurrentIndex(g_list_position(appInfos_, found));
g_object_unref(app);
}
else { /* if it's not found, add it to the list */
appInfos_ = g_list_prepend(appInfos_, app);
GIcon* gicon = g_app_info_get_icon(app);
QString name = QString::fromUtf8(g_app_info_get_name(app));
insertItem(0, IconTheme::icon(gicon), name);
setCurrentIndex(0);
}
blockOnCurrentIndexChanged_ = false;
return;
}
}
// block our handler to prevent recursive calls.
blockOnCurrentIndexChanged_ = true;
// restore to previously selected item
setCurrentIndex(prevIndex_);
blockOnCurrentIndexChanged_ = false;
}
else {
prevIndex_ = index;
}
}
#if 0
/* get a list of custom apps added with app-chooser.
* the returned GList is owned by the combo box and shouldn't be freed. */
const GList* AppChooserComboBox::customApps() {
}
#endif
} // namespace Fm