gecko-dev/widget/qt/nsMFilePicker.cpp

285 строки
7.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=4 et :
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <QWidget>
#include "nsMFilePicker.h"
// Use Qt Tracker API to get attachment data from tracker:
#include <QtSparql/QSparqlConnection>
#include <QtSparql/QSparqlQuery>
#include <QtSparql/QSparqlResult>
#include <MApplication>
#include <MApplicationPage>
#include <MApplicationWindow>
#include <MSceneManager>
#include <QFileInfo>
#include <QPointer>
#include <SelectSingleContentItemPage.h>
#include <SelectMultipleContentItemsPage.h>
MeegoFileDialog::MeegoFileDialog(QObject* aParent)
: QObject(aParent)
, mMode(Mode_Unknown)
{
}
MeegoFileDialog::~MeegoFileDialog()
{
}
int
MeegoFileDialog::exec()
{
MApplicationPage* page = NULL;
switch(mMode) {
case Mode_OpenFile:
page = createOpenFilePage();
break;
case Mode_OpenFiles:
page = createOpenFilesPage();
break;
case Mode_OpenDirectory:
page = createOpenDirectoryPage();
break;
default:
return 0;
}
page->setTitle(mCaption);
QPointer<MApplicationWindow> appWindow = new MApplicationWindow(MApplication::activeWindow());
QObject::connect(MApplication::activeWindow(), SIGNAL(switcherEntered()), this, SLOT(backButtonClicked()));
appWindow->show();
// a not so pretty Hack to build up a back button
// by using a empty scene window for a pseudo history stack
MSceneWindow* fakeWindow = new MSceneWindow();
// tell fake window to disappear when page back was clicked.
connect(page, SIGNAL(backButtonClicked()), fakeWindow, SLOT(disappear()));
// let new page appear on pseudo Application Window
appWindow->sceneManager()->appearSceneWindowNow(page);
// get, manipulate and set history stack
QList<MSceneWindow*> sceneWindowHistory = appWindow->sceneManager()->pageHistory();
sceneWindowHistory.insert(0, fakeWindow);
appWindow->sceneManager()->setPageHistory(sceneWindowHistory);
// start own eventloop
QEventLoop eventLoop;
mEventLoop = &eventLoop;
QPointer<MeegoFileDialog> guard = this;
(void) eventLoop.exec(QEventLoop::DialogExec);
if (guard.isNull()) {
return 0;
}
if (page) {
page->disappear();
delete page;
}
if (appWindow) {
delete appWindow;
}
mEventLoop = 0;
return 0;
}
MApplicationPage*
MeegoFileDialog::createOpenFilePage()
{
QStringList itemType("http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#FileDataObject");
SelectSingleContentItemPage* page =
new SelectSingleContentItemPage(QString(),
itemType);
connect(page, SIGNAL(contentItemSelected(const QString&)),
this, SLOT (contentItemSelected(const QString&)));
connect(page, SIGNAL(backButtonClicked()),
this, SLOT (backButtonClicked()));
return page;
}
MApplicationPage*
MeegoFileDialog::createOpenFilesPage()
{
QStringList itemType("http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#Folder");
SelectMultipleContentItemsPage* page = new SelectMultipleContentItemsPage(QString(), itemType);
connect(page, SIGNAL(contentItemsSelected(const QStringList&)),
this, SLOT (contentItemsSelected(const QStringList&)));
connect(page, SIGNAL(backButtonClicked()),
this, SLOT (backButtonClicked()));
return page;
}
MApplicationPage*
MeegoFileDialog::createOpenDirectoryPage()
{
QStringList itemType("http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#Folder");
SelectSingleContentItemPage* page = new SelectSingleContentItemPage(QString(), itemType);
connect(page, SIGNAL(contentItemSelected(const QString&)),
this, SLOT (contentItemSelected(const QString&)));
connect(page, SIGNAL(backButtonClicked()),
this, SLOT (backButtonClicked()));
return page;
}
QStringList
MeegoFileDialog::selectedFileNames() const
{
return mSelectedFileNames;
}
bool
MeegoFileDialog::hasSelectedFileNames() const
{
return !mSelectedFileNames.isEmpty();
}
void
MeegoFileDialog::contentItemSelected(const QString& aContentItem)
{
mSelectedFileNames.clear();
if (aContentItem.isEmpty()) {
finishEventLoop();
return;
}
QUrl fileUrl = trackerIdToFilename(aContentItem);
QFileInfo fileInfo(fileUrl.toLocalFile());
if (fileInfo.isFile()) {
mSelectedFileNames << fileInfo.canonicalFilePath();
}
finishEventLoop();
}
void
MeegoFileDialog::contentItemsSelected(const QStringList& aContentItems)
{
mSelectedFileNames.clear();
foreach (QString contentItem, aContentItems) {
QUrl fileUrl = trackerIdToFilename(contentItem);
QFileInfo fileInfo(fileUrl.toLocalFile());
if (fileInfo.isFile()) {
mSelectedFileNames << fileInfo.canonicalFilePath();
}
}
finishEventLoop();
}
void
MeegoFileDialog::backButtonClicked()
{
mSelectedFileNames.clear();
finishEventLoop();
}
/* static */ QString
MeegoFileDialog::getOpenFileName(QWidget* parent,
const QString& caption,
const QString& dir,
const QString& filter)
{
QPointer<MeegoFileDialog> picker = new MeegoFileDialog(parent);
QString result;
picker->mMode = MeegoFileDialog::Mode_OpenFile;
picker->mCaption = caption;
picker->exec();
// Need separate 'if' because picker might have been destroyed by its parent during exec()
if (picker) {
if (picker->hasSelectedFileNames()) {
result = picker->selectedFileNames().first();
}
delete picker;
}
return result;
}
/* static */ QString
MeegoFileDialog::getExistingDirectory(QWidget* parent,const QString& caption, const QString& dir)
{
QPointer<MeegoFileDialog> picker = new MeegoFileDialog(parent);
QString result;
picker->mMode = MeegoFileDialog::Mode_OpenDirectory;
picker->mCaption = caption;
picker->exec();
// Need separate 'if' because picker might have been destroyed by its parent during exec()
if (picker) {
if (picker->hasSelectedFileNames()) {
result = picker->selectedFileNames().first();
}
delete picker;
}
return result;
}
/* static */ QStringList
MeegoFileDialog::getOpenFileNames(QWidget* parent,
const QString& caption,
const QString& dir,
const QString& filter)
{
QPointer<MeegoFileDialog> picker = new MeegoFileDialog(parent);
QStringList result;
picker->mMode = MeegoFileDialog::Mode_OpenFiles;
picker->mCaption = caption;
picker->exec();
// Need separate 'if' because picker might have been destroyed by its parent during exec()
if (picker) {
if (picker->hasSelectedFileNames()) {
result = picker->selectedFileNames();
}
delete picker;
}
return result;
}
QUrl
MeegoFileDialog::trackerIdToFilename(const QString& trackerId)
{
QSparqlQuery query("SELECT ?u WHERE { ?:tUri nie:url ?u . }");
query.bindValue("tUri", QUrl(trackerId)); // That puts <trackerId> into the query
QSparqlConnection connection("QTRACKER"); // Exact string needed to make connection to tracker
QSparqlResult* result = connection.exec(query);
result->waitForFinished();
result->first();
QUrl resultFile;
if (result->isValid()) {
resultFile = QUrl(result->binding(0).value().toString());
}
delete result;
return resultFile;
}