Mercurial > hg > svcore
changeset 210:a06afefe45ee
* Cancel when downloading file
* Handle status codes (404 etc)
* Add RemoteFile::isAvailable
* Start on FileFinder for looking up files referred to in distant sessions
author | Chris Cannam |
---|---|
date | Wed, 10 Jan 2007 17:26:39 +0000 (2007-01-10) |
parents | 6576a208e8e7 |
children | e2bbb58e6df6 |
files | data/data.pro data/fileio/FileFinder.cpp data/fileio/FileFinder.h data/fileio/RemoteFile.cpp data/fileio/RemoteFile.h |
diffstat | 5 files changed, 187 insertions(+), 4 deletions(-) [+] |
line wrap: on
line diff
--- a/data/data.pro Wed Jan 10 12:27:55 2007 +0000 +++ b/data/data.pro Wed Jan 10 17:26:39 2007 +0000 @@ -26,6 +26,7 @@ fileio/CSVFileWriter.h \ fileio/DataFileReader.h \ fileio/DataFileReaderFactory.h \ + fileio/FileFinder.h \ fileio/FileReadThread.h \ fileio/MatrixFile.h \ fileio/MIDIFileReader.h \ @@ -60,6 +61,7 @@ fileio/CSVFileReader.cpp \ fileio/CSVFileWriter.cpp \ fileio/DataFileReaderFactory.cpp \ + fileio/FileFinder.cpp \ fileio/FileReadThread.cpp \ fileio/MatrixFile.cpp \ fileio/MIDIFileReader.cpp \
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/data/fileio/FileFinder.cpp Wed Jan 10 17:26:39 2007 +0000 @@ -0,0 +1,68 @@ +/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ + +/* + Sonic Visualiser + An audio file viewer and annotation editor. + Centre for Digital Music, Queen Mary, University of London. + This file copyright 2007 QMUL. + + This program 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 2 of the + License, or (at your option) any later version. See the file + COPYING included with this distribution for more information. +*/ + +#include "FileFinder.h" +#include "RemoteFile.h" + +#include <QFileInfo> +#include <QMessageBox> +#include <QFileDialog> + + +FileFinder::FileFinder(QString location, QString lastKnownLocation) : + m_location(location), + m_lastKnownLocation(lastKnownLocation), + m_lastLocatedLocation("") +{ +} + +FileFinder::~FileFinder() +{ +} + +QString +FileFinder::getLocation() +{ + if (QFileInfo(m_location).exists()) return m_location; + + if (QMessageBox::question(0, + QMessageBox::tr("Failed to open file"), + QMessageBox::tr("Audio file \"%1\" could not be opened.\nLocate it?").arg(m_location), +//!!! QMessageBox::tr("File \"%1\" could not be opened.\nLocate it?").arg(location), + QMessageBox::Ok, + QMessageBox::Cancel) == QMessageBox::Ok) { + + //!!! This uses QFileDialog::getOpenFileName, while other + //files are located using specially built file dialogs in + //MainWindow::getOpenFileName -- pull out MainWindow + //functions into another class? + QString path = QFileDialog::getOpenFileName + (0, + QFileDialog::tr("Locate file \"%1\"").arg(QFileInfo(m_location).fileName()), m_location, + QFileDialog::tr("All files (*.*)")); +/*!!! + QFileDialog::tr("Audio files (%1)\nAll files (*.*)") + .arg(AudioFileReaderFactory::getKnownExtensions())); +*/ + + if (path != "") { + return path; + } + } + + return ""; +} + +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/data/fileio/FileFinder.h Wed Jan 10 17:26:39 2007 +0000 @@ -0,0 +1,48 @@ +/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ + +/* + Sonic Visualiser + An audio file viewer and annotation editor. + Centre for Digital Music, Queen Mary, University of London. + This file copyright 2007 QMUL. + + This program 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 2 of the + License, or (at your option) any later version. See the file + COPYING included with this distribution for more information. +*/ + +#ifndef _FILE_FINDER_H_ +#define _FILE_FINDER_H_ + +#include <QString> + +class FileFinder +{ +public: + /** + * Find a file. + * + * "location" is what we know about where the file is supposed to + * be: it may be a relative path, an absolute path, a URL, or just + * a filename. + * + * "lastKnownLocation", if provided, is a path or URL of something + * that can be used as a reference point to locate it -- for + * example, the location of the session file that is referring to + * the file we're looking for. + */ + FileFinder(QString location, QString lastKnownLocation = ""); + virtual ~FileFinder(); + + QString getLocation(); + +protected: + QString m_location; + QString m_lastKnownLocation; + QString m_lastLocatedLocation; +}; + +#endif +
--- a/data/fileio/RemoteFile.cpp Wed Jan 10 12:27:55 2007 +0000 +++ b/data/fileio/RemoteFile.cpp Wed Jan 10 17:26:39 2007 +0000 @@ -23,6 +23,7 @@ #include <QDir> #include <QApplication> #include <QProgressDialog> +#include <QHttpResponseHeader> #include <iostream> @@ -37,8 +38,10 @@ m_http(0), m_localFile(0), m_ok(false), + m_lastStatus(0), m_done(false), - m_progressDialog(0) + m_progressDialog(0), + m_progressShowTimer(this) { if (!canHandleScheme(url)) { std::cerr << "RemoteFile::RemoteFile: ERROR: Unsupported scheme in URL \"" << url.toString().toStdString() << "\"" << std::endl; @@ -58,6 +61,8 @@ connect(m_http, SIGNAL(done(bool)), this, SLOT(done(bool))); connect(m_http, SIGNAL(dataReadProgress(int, int)), this, SLOT(dataReadProgress(int, int))); + connect(m_http, SIGNAL(responseHeaderReceived(const QHttpResponseHeader &)), + this, SLOT(responseHeaderReceived(const QHttpResponseHeader &))); m_http->get(url.path(), m_localFile); m_ok = true; @@ -95,7 +100,12 @@ if (m_ok) { m_progressDialog = new QProgressDialog(tr("Downloading %1...").arg(url.toString()), tr("Cancel"), 0, 100); - m_progressDialog->show(); + m_progressDialog->hide(); + connect(&m_progressShowTimer, SIGNAL(timeout()), + this, SLOT(showProgressDialog())); + connect(m_progressDialog, SIGNAL(canceled()), this, SLOT(cancelled())); + m_progressShowTimer.setSingleShot(true); + m_progressShowTimer.start(2000); } } @@ -114,6 +124,15 @@ return (scheme == "http" || scheme == "ftp"); } +bool +RemoteFile::isAvailable() +{ + while (!m_done && m_lastStatus == 0) { + QApplication::processEvents(); + } + return (m_lastStatus / 100 == 2); +} + void RemoteFile::wait() { @@ -153,21 +172,47 @@ } void +RemoteFile::responseHeaderReceived(const QHttpResponseHeader &resp) +{ + m_lastStatus = resp.statusCode(); + if (m_lastStatus / 100 >= 4) { + m_errorString = QString("%1 %2") + .arg(resp.statusCode()).arg(resp.reasonPhrase()); + } +} + +void RemoteFile::dataTransferProgress(qint64 done, qint64 total) { int percent = int((double(done) / double(total)) * 100.0 - 0.1); emit progress(percent); m_progressDialog->setValue(percent); + m_progressDialog->show(); +} + +void +RemoteFile::cancelled() +{ + delete m_http; + m_http = 0; + delete m_ftp; + m_ftp = 0; + delete m_progressDialog; + m_progressDialog = 0; + delete m_localFile; + m_localFile = 0; + m_done = true; + m_ok = false; + m_errorString = tr("Download cancelled"); } void RemoteFile::done(bool error) { - //!!! need to identify 404s etc in the return headers - emit progress(100); m_ok = !error; + if (error) { if (m_http) { m_errorString = m_http->errorString(); @@ -176,6 +221,10 @@ } } + if (m_lastStatus / 100 >= 4) { + m_ok = false; + } + delete m_localFile; m_localFile = 0; @@ -195,6 +244,12 @@ m_done = true; } +void +RemoteFile::showProgressDialog() +{ + if (m_progressDialog) m_progressDialog->show(); +} + QString RemoteFile::createLocalFile(QUrl url) {
--- a/data/fileio/RemoteFile.h Wed Jan 10 12:27:55 2007 +0000 +++ b/data/fileio/RemoteFile.h Wed Jan 10 17:26:39 2007 +0000 @@ -19,11 +19,13 @@ #include <QUrl> #include <QMutex> #include <QString> +#include <QTimer> class QFtp; class QHttp; class QFile; class QProgressDialog; +class QHttpResponseHeader; class RemoteFile : public QObject { @@ -33,10 +35,13 @@ RemoteFile(QUrl url); virtual ~RemoteFile(); + bool isAvailable(); + void wait(); bool isOK() const; bool isDone() const; + QString getLocalFilename() const; QString getErrorString() const; @@ -48,8 +53,11 @@ protected slots: void dataReadProgress(int done, int total); + void responseHeaderReceived(const QHttpResponseHeader &resp); void dataTransferProgress(qint64 done, qint64 total); void done(bool error); + void showProgressDialog(); + void cancelled(); protected: QFtp *m_ftp; @@ -58,8 +66,10 @@ QString m_localFilename; QString m_errorString; bool m_ok; + int m_lastStatus; bool m_done; QProgressDialog *m_progressDialog; + QTimer m_progressShowTimer; QString createLocalFile(QUrl url);