/usr/lib/Wt/examples/composer/AttachmentEdit.C is in witty-examples 3.3.0-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
*
* See the LICENSE file for terms of use.
*/
#include <fstream>
#ifndef WIN32
#include <unistd.h>
#endif
#include <boost/lexical_cast.hpp>
#include <iostream>
#include <Wt/WAnchor>
#include <Wt/WApplication>
#include <Wt/WCheckBox>
#include <Wt/WCssDecorationStyle>
#include <Wt/WFileResource>
#include <Wt/WFileUpload>
#include <Wt/WProgressBar>
#include <Wt/WText>
#include "Attachment.h"
#include "AttachmentEdit.h"
#include "Composer.h"
#include "Option.h"
AttachmentEdit::UploadInfo::UploadInfo(const Http::UploadedFile& f,
WContainerWidget *parent)
: WContainerWidget(parent),
info_(f)
{
/*
* Include the file ?
*/
keep_ = new WCheckBox(this);
keep_->setChecked();
/*
* Give information on the file uploaded.
*/
std::streamsize fsize = 0;
{
std::ifstream theFile(info_.spoolFileName().c_str());
theFile.seekg(0, std::ios_base::end);
fsize = theFile.tellg();
theFile.seekg(0);
}
std::wstring size;
if (fsize < 1024)
size = boost::lexical_cast<std::wstring>(fsize) + L" bytes";
else
size = boost::lexical_cast<std::wstring>((int)(fsize / 1024))
+ L"kb";
std::wstring fn = static_cast<std::wstring>
(escapeText(WString::fromUTF8(info_.clientFileName())));
downloadLink_
= new WAnchor("", fn + L" (<i>" + WString::fromUTF8(info_.contentType())
+ L"</i>) " + size, this);
WFileResource *res = new WFileResource(info_.contentType(),
info_.spoolFileName(),
this);
res->suggestFileName(info_.clientFileName());
downloadLink_->setLink(res);
}
AttachmentEdit::AttachmentEdit(Composer *composer, WContainerWidget *parent)
: WContainerWidget(parent),
composer_(composer),
uploadDone_(this),
uploadFailed_(false)
{
/*
* The file upload itself.
*/
upload_ = new WFileUpload(this);
upload_->setMultiple(true);
upload_->setFileTextSize(40);
/*
* A progress bar
*/
WProgressBar *progress = new WProgressBar();
progress->setFormat(WString::Empty);
progress->setVerticalAlignment(AlignMiddle);
upload_->setProgressBar(progress);
/*
* The 'remove' option.
*/
remove_ = new Option(tr("msg.remove"), this);
upload_->decorationStyle().font().setSize(WFont::Smaller);
upload_->setVerticalAlignment(AlignMiddle);
remove_->setMargin(5, Left);
remove_->item()->clicked().connect(this, &WWidget::hide);
remove_->item()->clicked().connect(this, &AttachmentEdit::remove);
// The error message.
error_ = new WText("", this);
error_->setStyleClass("error");
error_->setMargin(WLength(5), Left);
/*
* React to events.
*/
// Try to catch the fileupload change signal to trigger an upload.
// We could do like google and at a delay with a WTimer as well...
upload_->changed().connect(upload_, &WFileUpload::upload);
// React to a succesfull upload.
upload_->uploaded().connect(this, &AttachmentEdit::uploaded);
// React to a fileupload problem.
upload_->fileTooLarge().connect(this, &AttachmentEdit::fileTooLarge);
/*
* Connect the uploadDone signal to the Composer's attachmentDone,
* so that the Composer can keep track of attachment upload progress,
* if it wishes.
*/
uploadDone_.connect(composer, &Composer::attachmentDone);
}
bool AttachmentEdit::uploadNow()
{
/*
* See if this attachment still needs to be uploaded,
* and return if a new asynchronous upload is started.
*/
if (upload_) {
if (upload_->canUpload()) {
upload_->upload();
return true;
} else
return false;
} else
return false;
}
void AttachmentEdit::uploaded()
{
std::vector<Http::UploadedFile> files = upload_->uploadedFiles();
if (!files.empty()) {
/*
* Delete this widgets since we have a succesfull upload.
*/
delete upload_;
upload_ = 0;
delete remove_;
remove_ = 0;
delete error_;
error_ = 0;
for (unsigned i = 0; i < files.size(); ++i)
uploadInfo_.push_back(new UploadInfo(files[i], this));
} else {
error_->setText(tr("msg.file-empty"));
uploadFailed_ = true;
}
/*
* Signal to the Composer that a new asynchronous file upload was processed.
*/
uploadDone_.emit();
}
void AttachmentEdit::remove()
{
composer_->removeAttachment(this);
}
void AttachmentEdit::fileTooLarge(::int64_t size)
{
error_->setText(tr("msg.file-too-large")
.arg(size / 1024)
.arg(WApplication::instance()->maximumRequestSize() / 1024));
uploadFailed_ = true;
/*
* Signal to the Composer that a new asyncrhonous file upload was processed.
*/
uploadDone_.emit();
}
std::vector<Attachment> AttachmentEdit::attachments()
{
std::vector<Attachment> result;
for (unsigned i = 0; i < uploadInfo_.size(); ++i) {
if (uploadInfo_[i]->keep_->isChecked()) {
Http::UploadedFile& f = uploadInfo_[i]->info_;
f.stealSpoolFile();
result.push_back(Attachment
(WString::fromUTF8(f.clientFileName()),
WString::fromUTF8(f.contentType()),
f.spoolFileName()));
}
}
return result;
}
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