Class: HttpWindow
- Inherits:
-
Qt::Dialog
show all
- Defined in:
- ext/ruby/qtruby/examples/network/http/httpwindow.rb
Instance Method Summary
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Methods inherited from Qt::Dialog
#exec
Methods inherited from Qt::Base
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Constructor Details
#initialize(parent = nil) ⇒ HttpWindow
Returns a new instance of HttpWindow.
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# File 'ext/ruby/qtruby/examples/network/http/httpwindow.rb', line 36
def initialize(parent = nil)
super(parent)
@urlLineEdit = Qt::LineEdit.new("http://www.ietf.org/iesg/1rfc_index.txt")
@urlLabel = Qt::Label.new(tr("&URL:"))
@urlLabel.buddy = @urlLineEdit
@statusLabel = Qt::Label.new(tr("Please enter the URL of a file you want to " \
"download."))
@quitButton = Qt::PushButton.new(tr("Quit"))
@downloadButton = Qt::PushButton.new(tr("Download"))
@downloadButton.default = true
@progressDialog = Qt::ProgressDialog.new(self)
@http = Qt::Http.new(self)
connect(@urlLineEdit, SIGNAL('textChanged(const QString &)'),
self, SLOT(:enableDownloadButton))
connect(@http, SIGNAL('requestFinished(int, bool)'),
self, SLOT('httpRequestFinished(int, bool)'))
connect(@http, SIGNAL('dataReadProgress(int, int)'),
self, SLOT('updateDataReadProgress(int, int)'))
connect(@http, SIGNAL('responseHeaderReceived(const QHttpResponseHeader &)'),
self, SLOT('readResponseHeader(const QHttpResponseHeader &)'))
connect(@progressDialog, SIGNAL(:canceled), self, SLOT(:cancelDownload))
connect(@downloadButton, SIGNAL(:clicked), self, SLOT(:downloadFile))
connect(@quitButton, SIGNAL(:clicked), self, SLOT(:close))
topLayout = Qt::HBoxLayout.new do |t|
t.addWidget(@urlLabel)
t.addWidget(@urlLineEdit)
end
buttonLayout = Qt::HBoxLayout.new do |b|
b.addStretch(1)
b.addWidget(@downloadButton)
b.addWidget(@quitButton)
end
self.layout = Qt::VBoxLayout.new do |m|
m.addLayout(topLayout)
m.addWidget(@statusLabel)
m.addLayout(buttonLayout)
end
self.windowTitle = tr("HTTP")
@urlLineEdit.setFocus()
end
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Instance Method Details
#cancelDownload ⇒ Object
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# File 'ext/ruby/qtruby/examples/network/http/httpwindow.rb', line 121
def cancelDownload()
@statusLabel.text = tr("Download canceled.")
@httpRequestAborted = true
@http.abort()
@downloadButton.enabled = true
end
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#downloadFile ⇒ Object
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# File 'ext/ruby/qtruby/examples/network/http/httpwindow.rb', line 86
def downloadFile()
url = Qt::Url.new(@urlLineEdit.text)
fileInfo = Qt::FileInfo.new(url.path)
fileName = fileInfo.fileName
if Qt::File.exists(fileName)
Qt::MessageBox.information(self, tr("HTTP"),
tr("There already exists a file called %s in " \
"the current directory." %
fileName))
return
end
@file = Qt::File.new(fileName)
if !@file.open(Qt::IODevice::WriteOnly)
Qt::MessageBox.information(self, tr("HTTP"),
tr("Unable to save the file %s: %s." %
[fileName, @file.errorString]))
@file.dispose
return
end
@http.setHost(url.host, url.port != -1 ? url.port : 80)
if !url.userName.empty?
@http.user = url.userName(url.password)
end
@httpRequestAborted = false
@httpGetId = @http.get(url.path(), @file)
@progressDialog.windowTitle = tr("HTTP")
@progressDialog.labelText = tr("Downloading %s." % fileName)
@downloadButton.enabled = false
end
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# File 'ext/ruby/qtruby/examples/network/http/httpwindow.rb', line 184
def enableDownloadButton()
@downloadButton.enabled = !@urlLineEdit.text.empty?
end
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#httpRequestFinished(requestId, error) ⇒ Object
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# File 'ext/ruby/qtruby/examples/network/http/httpwindow.rb', line 128
def httpRequestFinished(requestId, error)
if @httpRequestAborted
if !@file.nil?
@file.close
@file.remove
@file.dispose
@file = nil
end
@progressDialog.hide
return
end
if requestId != @httpGetId
return
end
@progressDialog.hide
@file.close
if error
@file.remove()
Qt::MessageBox.information(self, tr("HTTP"),
tr("Download failed: %s." %
@http.errorString))
else
fileName = Qt::FileInfo.new(Qt::Url.new(@urlLineEdit.text).path).fileName
@statusLabel.text = tr("Downloaded %s to current directory." % fileName)
end
@downloadButton.enabled = true
@file.dispose
@file = nil
end
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# File 'ext/ruby/qtruby/examples/network/http/httpwindow.rb', line 163
def ()
if .statusCode != 200
Qt::MessageBox.information(self, tr("HTTP"),
tr("Download failed: %s." %
.reasonPhrase))
@httpRequestAborted = true
@progressDialog.hide
@http.abort
return
end
end
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#updateDataReadProgress(bytesRead, totalBytes) ⇒ Object
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# File 'ext/ruby/qtruby/examples/network/http/httpwindow.rb', line 175
def updateDataReadProgress(bytesRead, totalBytes)
if @httpRequestAborted
return
end
@progressDialog.maximum = totalBytes
@progressDialog.value = bytesRead
end
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