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Wt examples
3.3.0
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An edit field for an email attachment. More...
#include <AttachmentEdit.h>

Classes | |
| class | UploadInfo |
Public Member Functions | |
| AttachmentEdit (Composer *composer, WContainerWidget *parent=0) | |
| Creates an attachment edit field. | |
| bool | uploadNow () |
| Updates the file now. | |
| bool | uploadFailed () const |
| Returns whether the upload failed. | |
| std::vector< Attachment > | attachments () |
| Returns the attachment. | |
| Signal< void > & | uploadDone () |
| Signal emitted when new attachment(s) have been uploaded (or failed to upload. | |
Private Member Functions | |
| void | uploaded () |
| Slot triggered when the WFileUpload completed an upload. | |
| void | fileTooLarge (::int64_t size) |
| Slot triggered when the WFileUpload received an oversized file. | |
| void | remove () |
| Slot triggered when the users wishes to remove this attachment edit. | |
Private Attributes | |
| Composer * | composer_ |
| Signal< void > | uploadDone_ |
| WFileUpload * | upload_ |
| The WFileUpload control. | |
| std::vector< UploadInfo * > | uploadInfo_ |
| WText * | error_ |
| The text box to display an error (empty or too big file) | |
| Option * | remove_ |
| The option to cancel the file upload. | |
| bool | uploadFailed_ |
| The state of the last upload process. | |
An edit field for an email attachment.
This widget managements one attachment edit: it shows a file upload control, handles the upload, and gives feed-back on the file uploaded.
This widget is part of the Wt composer example.
Definition at line 37 of file AttachmentEdit.h.
| AttachmentEdit::AttachmentEdit | ( | Composer * | composer, |
| WContainerWidget * | parent = 0 |
||
| ) |
Creates an attachment edit field.
Definition at line 71 of file AttachmentEdit.C.
: 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); }
| std::vector< Attachment > AttachmentEdit::attachments | ( | ) |
Returns the attachment.
Definition at line 191 of file AttachmentEdit.C.
{
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;
}
| void AttachmentEdit::fileTooLarge | ( | ::int64_t | size | ) | [private] |
Slot triggered when the WFileUpload received an oversized file.
Definition at line 178 of file AttachmentEdit.C.
{
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();
}
| void AttachmentEdit::remove | ( | ) | [private] |
Slot triggered when the users wishes to remove this attachment edit.
Definition at line 173 of file AttachmentEdit.C.
{
composer_->removeAttachment(this);
}
| Signal<void>& AttachmentEdit::uploadDone | ( | ) | [inline] |
Signal emitted when new attachment(s) have been uploaded (or failed to upload.
Definition at line 63 of file AttachmentEdit.h.
{ return uploadDone_; }
| void AttachmentEdit::uploaded | ( | ) | [private] |
Slot triggered when the WFileUpload completed an upload.
Definition at line 145 of file AttachmentEdit.C.
{
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();
}
| bool AttachmentEdit::uploadFailed | ( | ) | const [inline] |
Returns whether the upload failed.
Definition at line 54 of file AttachmentEdit.h.
{ return uploadFailed_; }
| bool AttachmentEdit::uploadNow | ( | ) |
Updates the file now.
Returns whether a new file will be uploaded. If so, the uploadDone signal will be signalled when the file is uploaded (or failed to upload).
Definition at line 129 of file AttachmentEdit.C.
Composer* AttachmentEdit::composer_ [private] |
Definition at line 66 of file AttachmentEdit.h.
WText* AttachmentEdit::error_ [private] |
The text box to display an error (empty or too big file)
Definition at line 90 of file AttachmentEdit.h.
Option* AttachmentEdit::remove_ [private] |
The option to cancel the file upload.
Definition at line 93 of file AttachmentEdit.h.
WFileUpload* AttachmentEdit::upload_ [private] |
The WFileUpload control.
Definition at line 71 of file AttachmentEdit.h.
Signal<void> AttachmentEdit::uploadDone_ [private] |
Definition at line 68 of file AttachmentEdit.h.
bool AttachmentEdit::uploadFailed_ [private] |
The state of the last upload process.
Definition at line 96 of file AttachmentEdit.h.
std::vector<UploadInfo *> AttachmentEdit::uploadInfo_ [private] |
Definition at line 87 of file AttachmentEdit.h.
1.7.5.1