1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
4 * ModuleBase_WidgetExprEditor.cpp
6 * Created on: Aug 28, 2014
10 #include <ModuleBase_WidgetExprEditor.h>
11 #include <ModuleBase_Tools.h>
13 #include <ModelAPI_Data.h>
14 #include <ModelAPI_Object.h>
15 #include <ModelAPI_Validator.h>
16 #include <ModelAPI_ResultParameter.h>
17 #include <ModelAPI_AttributeString.h>
18 #include <ModelAPI_AttributeDouble.h>
20 #include <Config_WidgetAPI.h>
22 #include <QVBoxLayout>
27 #include <QStringListModel>
32 #include <QFontMetrics>
38 ExpressionEditor::ExpressionEditor(QWidget* theParent)
39 : QPlainTextEdit(theParent), myCompletedAndSelected(false), myIsModified(false)
41 myCompleter = new QCompleter(this);
42 myCompleter->setWidget(this);
43 myCompleter->setCompletionMode(QCompleter::PopupCompletion);
45 myCompleterModel = new QStringListModel(this);
46 myCompleter->setModel(myCompleterModel);
47 // Use sorted model to accelerate completion (QCompleter will use binary search)
48 myCompleter->setModelSorting(QCompleter::CaseInsensitivelySortedModel);
49 myCompleter->setCaseSensitivity(Qt::CaseInsensitive);
51 connect(myCompleter, SIGNAL(activated(const QString&)),
52 this, SLOT(insertCompletion(const QString&)));
53 (void) new QShortcut(QKeySequence(tr("Ctrl+Space", "Complete")),
54 this, SLOT(performCompletion()));
56 connect(this, SIGNAL(textChanged()), this, SLOT(onTextChanged()));
58 setTabChangesFocus(true);
61 ExpressionEditor::~ExpressionEditor()
66 void ExpressionEditor::setCompletionList(QStringList& theList)
69 theList.removeDuplicates();
70 myCompleterModel->setStringList(theList);
73 void ExpressionEditor::insertCompletion(const QString& theCompletion, bool isSingleWord)
75 QTextCursor aCursor = textCursor();
76 int numberOfCharsToComplete = theCompletion.length() -
77 myCompleter->completionPrefix().length();
78 int insertionPosition = aCursor.position();
79 aCursor.insertText(theCompletion.right(numberOfCharsToComplete));
81 aCursor.setPosition(insertionPosition);
82 aCursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
83 myCompletedAndSelected = true;
85 setTextCursor(aCursor);
88 void ExpressionEditor::performCompletion()
90 QTextCursor aCursor = textCursor();
91 aCursor.select(QTextCursor::WordUnderCursor);
92 const QString aPrefix = aCursor.selectedText();
93 if (!aPrefix.isEmpty() && aPrefix.at(aPrefix.length() - 1).isLetter()) {
94 performCompletion(aPrefix);
98 void ExpressionEditor::performCompletion(const QString& theCompletionPrefix)
101 if (theCompletionPrefix != myCompleter->completionPrefix()) {
102 myCompleter->setCompletionPrefix(theCompletionPrefix);
103 myCompleter->popup()->setCurrentIndex(myCompleter->completionModel()->index(0, 0));
105 if (myCompleter->completionCount() == 1) {
106 insertCompletion(myCompleter->currentCompletion(), true);
108 QRect aRect = cursorRect();
109 aRect.setWidth(myCompleter->popup()->sizeHintForColumn(0)
110 + myCompleter->popup()->verticalScrollBar()->sizeHint().width());
111 myCompleter->complete(aRect);
115 void ExpressionEditor::keyPressEvent(QKeyEvent* theEvent)
117 bool anIsModified = myIsModified;
119 if (myCompletedAndSelected && handledCompletedAndSelected(theEvent))
121 myCompletedAndSelected = false;
122 if (myCompleter->popup()->isVisible()) {
123 switch (theEvent->key()) {
132 myCompleter->popup()->hide();
137 switch (theEvent->key()) {
140 // do not react to the Enter key, the property panel processes it
147 QPlainTextEdit::keyPressEvent(theEvent);
150 bool ExpressionEditor::handledCompletedAndSelected(QKeyEvent* theEvent)
152 myCompletedAndSelected = false;
153 QTextCursor aCursor = textCursor();
154 switch (theEvent->key()) {
156 case Qt::Key_Return: aCursor.clearSelection(); break;
157 case Qt::Key_Escape: aCursor.removeSelectedText(); break;
158 default: return false;
160 setTextCursor(aCursor);
165 void ExpressionEditor::setPlaceHolderText( const QString& thePlaceHolderText )
167 myPlaceHolderText = thePlaceHolderText;
170 QString ExpressionEditor::placeHolderText() const
172 return myPlaceHolderText;
175 bool ExpressionEditor::isModified() const
180 void ExpressionEditor::clearModified()
182 myIsModified = false;
185 void ExpressionEditor::paintEvent( QPaintEvent* theEvent )
187 QPlainTextEdit::paintEvent( theEvent );
189 if( toPlainText().isEmpty() )
191 QPainter aPainter( viewport() );
192 QFontMetrics aFontMetrics = fontMetrics();
194 QPointF offset(contentOffset());
196 int m = (int)document()->documentMargin();
197 QRect lineRect( r.x() + m + offset.x(), offset.y(),
198 r.width() - 2*m, aFontMetrics.height() );
200 Qt::Alignment va = QStyle::visualAlignment( layoutDirection(), Qt::AlignLeft );
201 int minLB = qMax( 0, -aFontMetrics.minLeftBearing() );
203 QColor aColor = palette().text().color();
204 aColor.setAlpha( 128 );
205 QPen anOldpen = aPainter.pen();
206 aPainter.setPen( aColor );
207 lineRect.adjust(minLB, 0, 0, 0);
208 QString elidedText = aFontMetrics.elidedText( myPlaceHolderText, Qt::ElideRight, lineRect.width() );
209 aPainter.drawText( lineRect, va, elidedText );
210 aPainter.setPen( anOldpen );
214 bool ExpressionEditor::focusNextPrevChild(bool theIsNext)
217 emit editingFinished();
219 emit focusNextPrev();
220 return QPlainTextEdit::focusNextPrevChild(theIsNext);
223 void ExpressionEditor::onTextChanged()
226 emit valueModified();
230 ModuleBase_WidgetExprEditor::ModuleBase_WidgetExprEditor( QWidget* theParent,
231 const Config_WidgetAPI* theData,
232 const std::string& theParentId,
233 const std::string& thePlaceHolder )
234 : ModuleBase_ModelWidget(theParent, theData, theParentId)
236 QVBoxLayout* aMainLay = new QVBoxLayout(this);
237 ModuleBase_Tools::adjustMargins(aMainLay);
239 myResultLabel = new QLabel(this);
240 myResultLabel->setWordWrap(true);
241 QFontMetrics fm(myResultLabel->font());
242 myResultLabel->setMinimumHeight(fm.height() * 2); // set 2 line height as minimum
243 myResultLabel->setAlignment(Qt::AlignLeft|Qt::AlignBottom);
244 aMainLay->addWidget(myResultLabel);
245 myEditor = new ExpressionEditor(this);
246 myEditor->setMinimumHeight(20);
247 myEditor->setPlaceHolderText( QString::fromStdString( thePlaceHolder ) );
248 aMainLay->addWidget(myEditor);
249 this->setLayout(aMainLay);
251 connect(myEditor, SIGNAL(valueModified()), this, SIGNAL(valuesModified()));
252 //connect(myEditor, SIGNAL(editingFinished()), this, SLOT(onTextChanged()));
253 connect(myEditor, SIGNAL(valueStored()), this, SLOT(onTextChanged()));
254 connect(myEditor, SIGNAL(focusNextPrev()), this, SIGNAL(focusNextPrev()));
257 ModuleBase_WidgetExprEditor::~ModuleBase_WidgetExprEditor()
261 bool ModuleBase_WidgetExprEditor::storeValueCustom() const
263 // A rare case when plugin was not loaded.
266 DataPtr aData = myFeature->data();
267 AttributeStringPtr aStringAttr = aData->string(attributeID());
268 QString aWidgetValue = myEditor->toPlainText();
269 aStringAttr->setValue(aWidgetValue.toStdString());
270 updateObject(myFeature);
272 // Try to get the value
274 std::string anErrorMessage = myFeature->string("ExpressionError")->value();
275 if (anErrorMessage.empty()) {
276 ResultParameterPtr aParam =
277 std::dynamic_pointer_cast<ModelAPI_ResultParameter>(myFeature->firstResult());
279 AttributeDoublePtr aValueAttr =
280 aParam->data()->real(ModelAPI_ResultParameter::VALUE());
281 if (aValueAttr.get()) {
282 double aValue = aValueAttr->value();
283 aStateMsg = "Result: " + QString::number(aValue);
287 aStateMsg = "Error: " + QString::fromStdString(anErrorMessage);
289 myResultLabel->setText(aStateMsg);
293 bool ModuleBase_WidgetExprEditor::restoreValueCustom()
295 // A rare case when plugin was not loaded.
298 DataPtr aData = myFeature->data();
299 AttributeStringPtr aStringAttr = aData->string(attributeID());
301 bool isBlocked = myEditor->blockSignals(true);
302 QTextCursor aCursor = myEditor->textCursor();
303 int pos = aCursor.position();
304 std::string aRestoredStr = aStringAttr->value();
305 myEditor->setPlainText(QString::fromStdString(aRestoredStr));
306 aCursor.setPosition(pos);
307 myEditor->setTextCursor(aCursor);
308 myEditor->blockSignals(isBlocked);
313 QList<QWidget*> ModuleBase_WidgetExprEditor::getControls() const
315 QList<QWidget*> result;
320 bool ModuleBase_WidgetExprEditor::processEnter()
322 bool isModified = myEditor->isModified();
324 emit valuesChanged();
325 myEditor->clearModified();
326 myEditor->selectAll();
331 void ModuleBase_WidgetExprEditor::onTextChanged()
333 emit valuesChanged();