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libfm-qt-packaging/src/appchoosercombobox.cpp

144 lines
5.3 KiB

/*
* Copyright (C) 2014 - 2015 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
*
* 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 "appchooserdialog.h"
#include "utilities.h"
#include "core/iconinfo.h"
namespace Fm {
AppChooserComboBox::AppChooserComboBox(QWidget* parent):
QComboBox(parent),
defaultAppIndex_(-1),
prevIndex_(0),
blockOnCurrentIndexChanged_(false) {
// the new Qt5 signal/slot syntax cannot handle overloaded methods by default
// hence a type-casting is needed here. really ugly!
// reference: https://forum.qt.io/topic/20998/qt5-new-signals-slots-syntax-does-not-work-solved
connect((QComboBox*)this, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &AppChooserComboBox::onCurrentIndexChanged);
}
AppChooserComboBox::~AppChooserComboBox() {
}
void AppChooserComboBox::setMimeType(std::shared_ptr<const Fm::MimeType> mimeType) {
clear();
defaultApp_.reset();
appInfos_.clear();
mimeType_ = std::move(mimeType);
if(mimeType_) {
const char* typeName = mimeType_->name();
defaultApp_ = Fm::GAppInfoPtr{g_app_info_get_default_for_type(typeName, FALSE), false};
GList* appInfos_glist = g_app_info_get_all_for_type(typeName);
int i = 0;
for(GList* l = appInfos_glist; l; l = l->next, ++i) {
Fm::GAppInfoPtr app{G_APP_INFO(l->data), false};
GIcon* gicon = g_app_info_get_icon(app.get());
addItem(gicon ? Fm::IconInfo::fromGIcon(gicon)->qicon(): QIcon(), g_app_info_get_name(app.get()));
if(g_app_info_equal(app.get(), defaultApp_.get())) {
defaultAppIndex_ = i;
}
appInfos_.push_back(std::move(app));
}
g_list_free(appInfos_glist);
}
// add "Other applications" item
insertSeparator(count());
addItem(tr("Customize"));
if(defaultAppIndex_ != -1) {
setCurrentIndex(defaultAppIndex_);
}
}
// returns the currently selected app.
Fm::GAppInfoPtr AppChooserComboBox::selectedApp() const {
// the elements of appInfos_ and the combo indexes before "Customize"
// always have a one-to-one correspondence
int idx = currentIndex();
return idx >= 0 && !appInfos_.empty() ? appInfos_[idx] : Fm::GAppInfoPtr{};
}
bool AppChooserComboBox::isChanged() const {
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) {
auto app = dlg.selectedApp();
if(app) {
/* see if it's already in the list to prevent duplication */
auto found = std::find_if(appInfos_.cbegin(), appInfos_.cend(), [&](const Fm::GAppInfoPtr& item) {
return g_app_info_equal(app.get(), item.get());
});
// 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 != appInfos_.cend()) {
auto pos = found - appInfos_.cbegin();
setCurrentIndex(pos);
}
else { /* if it's not found, add it to the list */
auto it = appInfos_.insert(appInfos_.cbegin(), std::move(app));
GIcon* gicon = g_app_info_get_icon(it->get());
insertItem(0, Fm::IconInfo::fromGIcon(gicon)->qicon(), g_app_info_get_name(it->get()));
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