Class: MdiChild

Inherits:
Qt::TextEdit
  • Object
show all
Defined in:
ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MdiChild

Returns a new instance of MdiChild.



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 34

def initialize()
	super
    setAttribute(Qt::WA_DeleteOnClose)
    @isUntitled = true
end

Instance Attribute Details

#currentFile ⇒ Object (readonly)

Returns the value of attribute currentFile.



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 30

def currentFile
  @currentFile
end

Instance Method Details

#closeEvent(event) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 111

def closeEvent(event)
    if maybeSave()
        event.accept()
    else
        event.ignore()
    end
end

#documentWasModified ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 119

def documentWasModified()
    setWindowModified(document().isModified())
end

#loadFile(fileName) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 51

def loadFile(fileName)
    file = Qt::File.new(fileName)
    if !file.open(Qt::File::ReadOnly | Qt::File::Text)
        Qt::MessageBox.warning(self, tr("MDI"),
                             tr("Cannot read file %s:\n%s." % [fileName, file.errorString]))
        return false
    end

    inf = Qt::TextStream.new(file)
    Qt::Application.overrideCursor = Qt::Cursor.new(Qt::WaitCursor)
    setPlainText(inf.readAll())
    Qt::Application.restoreOverrideCursor()

    setCurrentFile(fileName)

    connect(document(), SIGNAL('contentsChanged()'),
            self, SLOT('documentWasModified()'))

    return true
end

#maybeSave ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 123

def maybeSave()
    if document().isModified()
        ret = Qt::MessageBox::warning(self, tr("MDI"),
                     tr("'%s' has been modified.\n" \
                        "Do you want to save your changes?" % 
                             userFriendlyCurrentFile()),
                     Qt::MessageBox::Yes | Qt::MessageBox::Default,
                     Qt::MessageBox::No,
                     Qt::MessageBox::Cancel | Qt::MessageBox::Escape)
        if ret == Qt::MessageBox::Yes
            return save()
        elsif ret == Qt::MessageBox::Cancel
            return false
		end
    end
    return true
end

#newFile ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 40

def newFile()
    @@sequenceNumber = 1

    @isUntitled = true
    @currentFile = tr("document%s.txt" % @@sequenceNumber += 1)
    setWindowTitle(@currentFile + "[*]")

    connect(document(), SIGNAL('contentsChanged()'),
            self, SLOT('documentWasModified()'))
end

#save ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 72

def save()
    if @isUntitled
        return saveAs()
    else
        return saveFile(@currentFile)
    end
end

#saveAs ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 80

def saveAs()
    fileName = Qt::FileDialog.getSaveFileName(self, tr("Save As"),
                                                    @currentFile)
    if fileName.empty?
        return false
	end

    return saveFile(fileName)
end

#saveFile(fileName) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 90

def saveFile(fileName)
    file = Qt::File.new(fileName)
    if !file.open(Qt::File::WriteOnly | Qt::File::Text)
        Qt::MessageBox::warning(self, tr("MDI"),
                             tr("Cannot write file %s:\n%s." % [fileName, file.errorString]))
        return false
    end

    outf = Qt::TextStream.new(file)
    Qt::Application.setOverrideCursor(Qt::WaitCursor)
    outf << toPlainText()
    Qt::Application.restoreOverrideCursor()

    setCurrentFile(fileName)
    return true
end

#setCurrentFile(fileName) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 141

def setCurrentFile(fileName)
    @currentFile = Qt::FileInfo.new(fileName).canonicalFilePath()
    @isUntitled = false
    document().modified = false
    setWindowModified(false)
    setWindowTitle(userFriendlyCurrentFile() + "[*]")
end

#strippedName(fullFileName) ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 149

def strippedName(fullFileName)
    return Qt::FileInfo.new(fullFileName).fileName()
end

#userFriendlyCurrentFile ⇒ Object 



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# File 'ext/ruby/qtruby/examples/mainwindows/mdi/mdichild.rb', line 107

def userFriendlyCurrentFile()
    return strippedName(@currentFile)
end