rssguard/src/gui/feedmessageviewer.cpp
2016-04-03 08:49:14 +02:00

452 lines
21 KiB
C++
Executable File

// This file is part of RSS Guard.
//
// Copyright (C) 2011-2016 by Martin Rotter <rotter.martinos@gmail.com>
//
// RSS Guard is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// RSS Guard 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with RSS Guard. If not, see <http://www.gnu.org/licenses/>.
#include "gui/feedmessageviewer.h"
#include "miscellaneous/settings.h"
#include "miscellaneous/databasefactory.h"
#include "miscellaneous/systemfactory.h"
#include "miscellaneous/iconfactory.h"
#include "miscellaneous/mutex.h"
#include "miscellaneous/databasecleaner.h"
#include "core/messagesproxymodel.h"
#include "core/feeddownloader.h"
#include "core/feedsproxymodel.h"
#include "services/standard/standardserviceroot.h"
#include "services/standard/standardfeed.h"
#include "services/standard/standardfeedsimportexportmodel.h"
#include "gui/messagesview.h"
#include "gui/feedsview.h"
#include "gui/statusbar.h"
#include "gui/systemtrayicon.h"
#include "gui/messagebox.h"
#include "gui/messagestoolbar.h"
#include "gui/feedstoolbar.h"
#include "gui/messagepreviewer.h"
#include "gui/dialogs/formdatabasecleanup.h"
#include "gui/dialogs/formmain.h"
#include "exceptions/applicationexception.h"
#include <QVBoxLayout>
#include <QSplitter>
#include <QToolBar>
#include <QDebug>
#include <QLineEdit>
#include <QAction>
#include <QToolButton>
#include <QMenu>
#include <QWidgetAction>
#include <QThread>
#include <QProgressBar>
#include <QStatusBar>
#include <QPointer>
FeedMessageViewer::FeedMessageViewer(QWidget *parent)
: TabContent(parent),
m_toolBarsEnabled(true),
m_listHeadersEnabled(true),
m_toolBarFeeds(new FeedsToolBar(tr("Toolbar for feeds"), this)),
m_toolBarMessages(new MessagesToolBar(tr("Toolbar for messages"), this)),
m_messagesView(new MessagesView(this)),
m_feedsView(new FeedsView(this)),
m_messagesBrowser(new MessagePreviewer(this)) {
initialize();
initializeViews();
loadMessageViewerFonts();
createConnections();
}
FeedMessageViewer::~FeedMessageViewer() {
qDebug("Destroying FeedMessageViewer instance.");
}
void FeedMessageViewer::saveSize() {
Settings *settings = qApp->settings();
m_feedsView->saveAllExpandStates();
// Store offsets of splitters.
settings->setValue(GROUP(GUI), GUI::SplitterFeeds, QString(m_feedSplitter->saveState().toBase64()));
settings->setValue(GROUP(GUI), GUI::SplitterMessages, QString(m_messageSplitter->saveState().toBase64()));
// States of splitters are stored, let's store
// widths of columns.
int width_column_author = m_messagesView->columnWidth(MSG_DB_AUTHOR_INDEX);
int width_column_date = m_messagesView->columnWidth(MSG_DB_DCREATED_INDEX);
if (width_column_author != 0 && width_column_date != 0) {
settings->setValue(GROUP(GUI), KEY_MESSAGES_VIEW + QString::number(MSG_DB_AUTHOR_INDEX), width_column_author);
settings->setValue(GROUP(GUI), KEY_MESSAGES_VIEW + QString::number(MSG_DB_DCREATED_INDEX), width_column_date);
}
// Store "visibility" of toolbars and list headers.
settings->setValue(GROUP(GUI), GUI::ToolbarsVisible, m_toolBarsEnabled);
settings->setValue(GROUP(GUI), GUI::ListHeadersVisible, m_listHeadersEnabled);
}
void FeedMessageViewer::loadSize() {
const Settings *settings = qApp->settings();
const int default_msg_section_size = m_messagesView->header()->defaultSectionSize();
// Restore offsets of splitters.
m_feedSplitter->restoreState(QByteArray::fromBase64(settings->value(GROUP(GUI), SETTING(GUI::SplitterFeeds)).toString().toLocal8Bit()));
m_messageSplitter->restoreState(QByteArray::fromBase64(settings->value(GROUP(GUI), SETTING(GUI::SplitterMessages)).toString().toLocal8Bit()));
// Splitters are restored, now, restore widths of columns.
m_messagesView->setColumnWidth(MSG_DB_AUTHOR_INDEX, settings->value(GROUP(GUI),
KEY_MESSAGES_VIEW + QString::number(MSG_DB_AUTHOR_INDEX),
default_msg_section_size).toInt());
m_messagesView->setColumnWidth(MSG_DB_DCREATED_INDEX, settings->value(GROUP(GUI),
KEY_MESSAGES_VIEW + QString::number(MSG_DB_DCREATED_INDEX),
default_msg_section_size).toInt());
}
void FeedMessageViewer::loadMessageViewerFonts() {
m_messagesBrowser->reloadFontSettings();
// TODO: TODO
//QWebEngineSettings *view_settings = m_messagesBrowser->view()->settings();
//view_settings->setFontFamily(QWebEngineSettings::StandardFont, settings->value(GROUP(Messages),
// SETTING(Messages::PreviewerFontStandard)).toString());
}
void FeedMessageViewer::quit() {
// Quit the feeds model (stops auto-update timer etc.).
m_feedsView->sourceModel()->quit();
}
bool FeedMessageViewer::areToolBarsEnabled() const {
return m_toolBarsEnabled;
}
bool FeedMessageViewer::areListHeadersEnabled() const {
return m_listHeadersEnabled;
}
void FeedMessageViewer::switchMessageSplitterOrientation() {
if (m_messageSplitter->orientation() == Qt::Vertical) {
m_messageSplitter->setOrientation(Qt::Horizontal);
}
else {
m_messageSplitter->setOrientation(Qt::Vertical);
}
}
void FeedMessageViewer::setToolBarsEnabled(bool enable) {
m_toolBarsEnabled = enable;
m_toolBarFeeds->setVisible(enable);
m_toolBarMessages->setVisible(enable);
}
void FeedMessageViewer::setListHeadersEnabled(bool enable) {
m_listHeadersEnabled = enable;
m_feedsView->header()->setVisible(enable);
m_messagesView->header()->setVisible(enable);
}
void FeedMessageViewer::switchFeedComponentVisibility() {
QAction *sen = qobject_cast<QAction*>(sender());
if (sen != NULL) {
m_feedsWidget->setVisible(sen->isChecked());
}
else {
m_feedsWidget->setVisible(!m_feedsWidget->isVisible());
}
}
void FeedMessageViewer::toggleShowOnlyUnreadFeeds() {
const QAction *origin = qobject_cast<QAction*>(sender());
if (origin == NULL) {
m_feedsView->model()->invalidateReadFeedsFilter(true, false);
}
else {
m_feedsView->model()->invalidateReadFeedsFilter(true, origin->isChecked());
}
}
void FeedMessageViewer::updateMessageButtonsAvailability() {
const bool one_message_selected = m_messagesView->selectionModel()->selectedRows().size() == 1;
const bool atleast_one_message_selected = !m_messagesView->selectionModel()->selectedRows().isEmpty();
const bool bin_loaded = m_messagesView->sourceModel()->loadedItem() != NULL && m_messagesView->sourceModel()->loadedItem()->kind() == RootItemKind::Bin;
const FormMain *form_main = qApp->mainForm();
form_main->m_ui->m_actionDeleteSelectedMessages->setEnabled(atleast_one_message_selected);
form_main->m_ui->m_actionRestoreSelectedMessages->setEnabled(atleast_one_message_selected && bin_loaded);
form_main->m_ui->m_actionMarkSelectedMessagesAsRead->setEnabled(atleast_one_message_selected);
form_main->m_ui->m_actionMarkSelectedMessagesAsUnread->setEnabled(atleast_one_message_selected);
form_main->m_ui->m_actionOpenSelectedMessagesInternally->setEnabled(atleast_one_message_selected);
form_main->m_ui->m_actionOpenSelectedSourceArticlesExternally->setEnabled(atleast_one_message_selected);
form_main->m_ui->m_actionSendMessageViaEmail->setEnabled(one_message_selected);
form_main->m_ui->m_actionSwitchImportanceOfSelectedMessages->setEnabled(atleast_one_message_selected);
}
void FeedMessageViewer::updateFeedButtonsAvailability() {
const bool is_update_running = feedsView()->sourceModel()->isFeedUpdateRunning();
const bool critical_action_running = qApp->feedUpdateLock()->isLocked();
const RootItem *selected_item = feedsView()->selectedItem();
const bool anything_selected = selected_item != NULL;
const bool feed_selected = anything_selected && selected_item->kind() == RootItemKind::Feed;
const bool category_selected = anything_selected && selected_item->kind() == RootItemKind::Category;
const bool service_selected = anything_selected && selected_item->kind() == RootItemKind::ServiceRoot;
const FormMain *form_main = qApp->mainForm();
form_main->m_ui->m_actionStopRunningItemsUpdate->setEnabled(is_update_running);
form_main->m_ui->m_actionBackupDatabaseSettings->setEnabled(!critical_action_running);
form_main->m_ui->m_actionCleanupDatabase->setEnabled(!critical_action_running);
form_main->m_ui->m_actionClearSelectedItems->setEnabled(anything_selected);
form_main->m_ui->m_actionDeleteSelectedItem->setEnabled(!critical_action_running && anything_selected);
form_main->m_ui->m_actionEditSelectedItem->setEnabled(!critical_action_running && anything_selected);
form_main->m_ui->m_actionMarkSelectedItemsAsRead->setEnabled(anything_selected);
form_main->m_ui->m_actionMarkSelectedItemsAsUnread->setEnabled(anything_selected);
form_main->m_ui->m_actionUpdateAllItems->setEnabled(!critical_action_running);
form_main->m_ui->m_actionUpdateSelectedItems->setEnabled(!critical_action_running && (feed_selected || category_selected || service_selected));
form_main->m_ui->m_actionViewSelectedItemsNewspaperMode->setEnabled(anything_selected);
form_main->m_ui->m_actionExpandCollapseItem->setEnabled(anything_selected);
form_main->m_ui->m_actionServiceDelete->setEnabled(service_selected);
form_main->m_ui->m_actionServiceEdit->setEnabled(service_selected);
form_main->m_ui->m_actionAddFeedIntoSelectedAccount->setEnabled(anything_selected);
form_main->m_ui->m_actionAddCategoryIntoSelectedAccount->setEnabled(anything_selected);
form_main->m_ui->m_menuAddItem->setEnabled(!critical_action_running);
form_main->m_ui->m_menuAccounts->setEnabled(!critical_action_running);
form_main->m_ui->m_menuRecycleBin->setEnabled(!critical_action_running);
}
void FeedMessageViewer::createConnections() {
const FormMain *form_main = qApp->mainForm();
// Filtering & searching.
connect(m_toolBarMessages, SIGNAL(messageSearchPatternChanged(QString)), m_messagesView, SLOT(searchMessages(QString)));
connect(m_toolBarMessages, SIGNAL(messageFilterChanged(MessagesModel::MessageHighlighter)), m_messagesView, SLOT(filterMessages(MessagesModel::MessageHighlighter)));
// Message changers.
connect(m_messagesView, SIGNAL(currentMessageRemoved()), m_messagesBrowser, SLOT(clear()));
connect(m_messagesView, SIGNAL(currentMessageChanged(Message,RootItem*)), m_messagesBrowser, SLOT(loadMessage(Message,RootItem*)));
connect(m_messagesView, SIGNAL(currentMessageRemoved()), this, SLOT(updateMessageButtonsAvailability()));
connect(m_messagesView, SIGNAL(currentMessageChanged(Message,RootItem*)), this, SLOT(updateMessageButtonsAvailability()));
connect(m_messagesBrowser, SIGNAL(requestMessageListReload(bool)), m_messagesView, SLOT(reloadSelections(bool)));
connect(m_feedsView, SIGNAL(itemSelected(RootItem*)), this, SLOT(updateFeedButtonsAvailability()));
connect(qApp->feedUpdateLock(), SIGNAL(locked()), this, SLOT(updateFeedButtonsAvailability()));
connect(qApp->feedUpdateLock(), SIGNAL(unlocked()), this, SLOT(updateFeedButtonsAvailability()));
// If user selects feeds, load their messages.
connect(m_feedsView, SIGNAL(itemSelected(RootItem*)), m_messagesView, SLOT(loadItem(RootItem*)));
// State of many messages is changed, then we need
// to reload selections.
connect(m_feedsView->sourceModel(), SIGNAL(reloadMessageListRequested(bool)),
m_messagesView, SLOT(reloadSelections(bool)));
connect(m_feedsView->sourceModel(), SIGNAL(feedsUpdateFinished()), this, SLOT(onFeedsUpdateFinished()));
connect(m_feedsView->sourceModel(), SIGNAL(feedsUpdateStarted()), this, SLOT(onFeedsUpdateStarted()));
// Message openers.
connect(m_messagesView, SIGNAL(openMessagesInNewspaperView(RootItem*,QList<Message>)),
m_messagesView, SLOT(createNewspaperView(RootItem*,QList<Message>)));
connect(m_feedsView, SIGNAL(openMessagesInNewspaperView(RootItem*,QList<Message>)),
m_messagesView, SLOT(createNewspaperView(RootItem*,QList<Message>)));
// Toolbar forwardings.
connect(form_main->m_ui->m_actionAddFeedIntoSelectedAccount, SIGNAL(triggered()),
m_feedsView, SLOT(addFeedIntoSelectedAccount()));
connect(form_main->m_ui->m_actionAddCategoryIntoSelectedAccount, SIGNAL(triggered()),
m_feedsView, SLOT(addCategoryIntoSelectedAccount()));
connect(form_main->m_ui->m_actionCleanupDatabase,
SIGNAL(triggered()), this, SLOT(showDbCleanupAssistant()));
connect(form_main->m_ui->m_actionSwitchImportanceOfSelectedMessages,
SIGNAL(triggered()), m_messagesView, SLOT(switchSelectedMessagesImportance()));
connect(form_main->m_ui->m_actionDeleteSelectedMessages,
SIGNAL(triggered()), m_messagesView, SLOT(deleteSelectedMessages()));
connect(form_main->m_ui->m_actionMarkSelectedMessagesAsRead,
SIGNAL(triggered()), m_messagesView, SLOT(markSelectedMessagesRead()));
connect(form_main->m_ui->m_actionMarkSelectedMessagesAsUnread,
SIGNAL(triggered()), m_messagesView, SLOT(markSelectedMessagesUnread()));
connect(form_main->m_ui->m_actionOpenSelectedSourceArticlesExternally,
SIGNAL(triggered()), m_messagesView, SLOT(openSelectedSourceMessagesExternally()));
connect(form_main->m_ui->m_actionOpenSelectedMessagesInternally,
SIGNAL(triggered()), m_messagesView, SLOT(openSelectedMessagesInternally()));
connect(form_main->m_ui->m_actionSendMessageViaEmail,
SIGNAL(triggered()), m_messagesView, SLOT(sendSelectedMessageViaEmail()));
connect(form_main->m_ui->m_actionMarkAllItemsRead,
SIGNAL(triggered()), m_feedsView, SLOT(markAllItemsRead()));
connect(form_main->m_ui->m_actionMarkSelectedItemsAsRead,
SIGNAL(triggered()), m_feedsView, SLOT(markSelectedItemRead()));
connect(form_main->m_ui->m_actionExpandCollapseItem,
SIGNAL(triggered()), m_feedsView, SLOT(expandCollapseCurrentItem()));
connect(form_main->m_ui->m_actionMarkSelectedItemsAsUnread,
SIGNAL(triggered()), m_feedsView, SLOT(markSelectedItemUnread()));
connect(form_main->m_ui->m_actionClearSelectedItems,
SIGNAL(triggered()), m_feedsView, SLOT(clearSelectedFeeds()));
connect(form_main->m_ui->m_actionClearAllItems,
SIGNAL(triggered()), m_feedsView, SLOT(clearAllFeeds()));
connect(form_main->m_ui->m_actionUpdateSelectedItems,
SIGNAL(triggered()), m_feedsView, SLOT(updateSelectedItems()));
connect(form_main->m_ui->m_actionUpdateAllItems,
SIGNAL(triggered()), m_feedsView, SLOT(updateAllItems()));
connect(form_main->m_ui->m_actionStopRunningItemsUpdate,
SIGNAL(triggered()), m_feedsView->sourceModel(), SLOT(stopRunningFeedUpdate()));
connect(form_main->m_ui->m_actionEditSelectedItem,
SIGNAL(triggered()), m_feedsView, SLOT(editSelectedItem()));
connect(form_main->m_ui->m_actionViewSelectedItemsNewspaperMode,
SIGNAL(triggered()), m_feedsView, SLOT(openSelectedItemsInNewspaperMode()));
connect(form_main->m_ui->m_actionDeleteSelectedItem,
SIGNAL(triggered()), m_feedsView, SLOT(deleteSelectedItem()));
connect(form_main->m_ui->m_actionSwitchFeedsList,
SIGNAL(triggered()), this, SLOT(switchFeedComponentVisibility()));
connect(form_main->m_ui->m_actionSelectNextItem,
SIGNAL(triggered()), m_feedsView, SLOT(selectNextItem()));
connect(form_main->m_ui->m_actionSwitchToolBars,
SIGNAL(toggled(bool)), this, SLOT(setToolBarsEnabled(bool)));
connect(form_main->m_ui->m_actionSwitchListHeaders,
SIGNAL(toggled(bool)), this, SLOT(setListHeadersEnabled(bool)));
connect(form_main->m_ui->m_actionSelectPreviousItem,
SIGNAL(triggered()), m_feedsView, SLOT(selectPreviousItem()));
connect(form_main->m_ui->m_actionSelectNextMessage,
SIGNAL(triggered()), m_messagesView, SLOT(selectNextItem()));
connect(form_main->m_ui->m_actionSelectNextUnreadMessage,
SIGNAL(triggered()), m_messagesView, SLOT(selectNextUnreadItem()));
connect(form_main->m_ui->m_actionSelectPreviousMessage,
SIGNAL(triggered()), m_messagesView, SLOT(selectPreviousItem()));
connect(form_main->m_ui->m_actionSwitchMessageListOrientation, SIGNAL(triggered()),
this, SLOT(switchMessageSplitterOrientation()));
connect(form_main->m_ui->m_actionShowOnlyUnreadItems, SIGNAL(toggled(bool)),
this, SLOT(toggleShowOnlyUnreadFeeds()));
connect(form_main->m_ui->m_actionRestoreSelectedMessages, SIGNAL(triggered()),
m_messagesView, SLOT(restoreSelectedMessages()));
connect(form_main->m_ui->m_actionRestoreAllRecycleBins, SIGNAL(triggered()),
m_feedsView->sourceModel(), SLOT(restoreAllBins()));
connect(form_main->m_ui->m_actionEmptyAllRecycleBins, SIGNAL(triggered()),
m_feedsView->sourceModel(), SLOT(emptyAllBins()));
}
void FeedMessageViewer::initialize() {
// Initialize/populate toolbars.
m_toolBarFeeds->setFloatable(false);
m_toolBarFeeds->setMovable(false);
m_toolBarFeeds->setAllowedAreas(Qt::TopToolBarArea);
m_toolBarFeeds->loadChangeableActions();
m_toolBarMessages->setFloatable(false);
m_toolBarMessages->setMovable(false);
m_toolBarMessages->setAllowedAreas(Qt::TopToolBarArea);
m_toolBarMessages->loadChangeableActions();
// Now refresh visual setup.
refreshVisualProperties();
}
void FeedMessageViewer::initializeViews() {
m_feedsWidget = new QWidget(this);
m_messagesWidget = new QWidget(this);
m_feedSplitter = new QSplitter(Qt::Horizontal, this);
m_messageSplitter = new QSplitter(Qt::Vertical, this);
// Instantiate needed components.
QVBoxLayout *central_layout = new QVBoxLayout(this);
QVBoxLayout *feed_layout = new QVBoxLayout(m_feedsWidget);
QVBoxLayout *message_layout = new QVBoxLayout(m_messagesWidget);
// Set layout properties.
central_layout->setMargin(0);
central_layout->setSpacing(0);
feed_layout->setMargin(0);
feed_layout->setSpacing(0);
message_layout->setMargin(0);
message_layout->setSpacing(0);
// Set views.
m_feedsView->setFrameStyle(QFrame::NoFrame);
m_messagesView->setFrameStyle(QFrame::NoFrame);
// Setup message splitter.
m_messageSplitter->setObjectName(QSL("MessageSplitter"));
m_messageSplitter->setHandleWidth(1);
m_messageSplitter->setOpaqueResize(false);
m_messageSplitter->setChildrenCollapsible(false);
m_messageSplitter->addWidget(m_messagesView);
m_messageSplitter->addWidget(m_messagesBrowser);
// Assemble message-related components to single widget.
message_layout->addWidget(m_toolBarMessages);
message_layout->addWidget(m_messageSplitter);
// Assemble feed-related components to another widget.
feed_layout->addWidget(m_toolBarFeeds);
feed_layout->addWidget(m_feedsView);
// Assembler everything together.
m_feedSplitter->setHandleWidth(1);
m_feedSplitter->setOpaqueResize(false);
m_feedSplitter->setChildrenCollapsible(false);
m_feedSplitter->addWidget(m_feedsWidget);
m_feedSplitter->addWidget(m_messagesWidget);
// Add toolbar and main feeds/messages widget to main layout.
central_layout->addWidget(m_feedSplitter);
setTabOrder(m_feedsView, m_messagesView);
setTabOrder(m_messagesView, m_toolBarFeeds);
setTabOrder(m_toolBarFeeds, m_toolBarMessages);
setTabOrder(m_toolBarMessages, m_messagesBrowser);
updateMessageButtonsAvailability();
updateFeedButtonsAvailability();
}
void FeedMessageViewer::showDbCleanupAssistant() {
if (qApp->feedUpdateLock()->tryLock()) {
QScopedPointer<FormDatabaseCleanup> form_pointer(new FormDatabaseCleanup(this));
form_pointer.data()->setCleaner(m_feedsView->sourceModel()->databaseCleaner());
form_pointer.data()->exec();
qApp->feedUpdateLock()->unlock();
m_messagesView->reloadSelections(false);
m_feedsView->sourceModel()->reloadCountsOfWholeModel();
}
else {
qApp->showGuiMessage(tr("Cannot cleanup database"),
tr("Cannot cleanup database, because another critical action is running."),
QSystemTrayIcon::Warning, qApp->mainForm(), true);
}
}
void FeedMessageViewer::refreshVisualProperties() {
const Qt::ToolButtonStyle button_style = static_cast<Qt::ToolButtonStyle>(qApp->settings()->value(GROUP(GUI),
SETTING(GUI::ToolbarStyle)).toInt());
m_toolBarFeeds->setToolButtonStyle(button_style);
m_toolBarMessages->setToolButtonStyle(button_style);
}
void FeedMessageViewer::onFeedsUpdateFinished() {
m_messagesView->reloadSelections(true);
}
void FeedMessageViewer::onFeedsUpdateStarted() {
// Check only "Stop running update" button.
const bool is_update_running = feedsView()->sourceModel()->isFeedUpdateRunning();
qApp->mainForm()->m_ui->m_actionStopRunningItemsUpdate->setEnabled(is_update_running);
}