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Simplified the structure of the CompletionWidget

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Done-with: Roberto Raggi <roberto.raggi@nokia.com>
This commit is contained in:
Thorbjørn Lindeijer
2010-02-17 10:46:19 +01:00
parent ba9a197e5e
commit f14c50dabc
2 changed files with 185 additions and 116 deletions
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253
src/plugins/texteditor/completionwidget.cpp
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@@ -47,10 +47,13 @@ using namespace TextEditor::Internal;
#define NUMBER_OF_VISIBLE_ITEMS 10
namespace TextEditor {
namespace Internal {
class AutoCompletionModel : public QAbstractListModel
{
public:
AutoCompletionModel(QObject *parent, const QList<CompletionItem> &items);
AutoCompletionModel(QObject *parent);
inline const CompletionItem &itemAt(const QModelIndex &index) const
{ return m_items.at(index.row()); }
@@ -64,10 +67,13 @@ private:
QList<CompletionItem> m_items;
};
AutoCompletionModel::AutoCompletionModel(QObject *parent, const QList<CompletionItem> &items)
} // namespace Internal
} // namespace TextEditor
AutoCompletionModel::AutoCompletionModel(QObject *parent)
: QAbstractListModel(parent)
{
m_items = items;
}
void AutoCompletionModel::setItems(const QList<CompletionItem> &items)
@@ -97,13 +103,119 @@ QVariant AutoCompletionModel::data(const QModelIndex &index, int role) const
return QVariant();
}
CompletionWidget::CompletionWidget(CompletionSupport *support, ITextEditable *editor)
: QListView(),
: QFrame(0, Qt::Popup),
m_support(support),
m_editor(editor)
{
// We disable the frame on this list view and use a QFrame around it instead.
// This improves the look with QGTKStyle.
#ifndef Q_WS_MAC
setFrameStyle(frameStyle());
#endif
setObjectName(QLatin1String("m_popupFrame"));
setAttribute(Qt::WA_DeleteOnClose);
setMinimumSize(1, 1);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setMargin(0);
m_completionListView = new CompletionListView(support, editor, this);
layout->addWidget(m_completionListView);
setFocusProxy(m_completionListView);
connect(m_completionListView, SIGNAL(itemSelected(TextEditor::CompletionItem)),
this, SIGNAL(itemSelected(TextEditor::CompletionItem)));
connect(m_completionListView, SIGNAL(completionListClosed()),
this, SIGNAL(completionListClosed()));
connect(m_completionListView, SIGNAL(activated(QModelIndex)),
SLOT(closeList(QModelIndex)));
}
CompletionWidget::~CompletionWidget()
{
}
void CompletionWidget::setQuickFix(bool quickFix)
{
m_completionListView->setQuickFix(quickFix);
}
void CompletionWidget::setCompletionItems(const QList<TextEditor::CompletionItem> &completionitems)
{
m_completionListView->setCompletionItems(completionitems);
}
void CompletionWidget::closeList(const QModelIndex &index)
{
m_completionListView->closeList(index);
close();
}
void CompletionWidget::showCompletions(int startPos)
{
updatePositionAndSize(startPos);
show();
setFocus();
}
void CompletionWidget::updatePositionAndSize(int startPos)
{
// Determine size by calculating the space of the visible items
QAbstractItemModel *model = m_completionListView->model();
int visibleItems = model->rowCount();
if (visibleItems > NUMBER_OF_VISIBLE_ITEMS)
visibleItems = NUMBER_OF_VISIBLE_ITEMS;
const QStyleOptionViewItem &option = m_completionListView->viewOptions();
QSize shint;
for (int i = 0; i < visibleItems; ++i) {
QSize tmp = m_completionListView->itemDelegate()->sizeHint(option, model->index(i, 0));
if (shint.width() < tmp.width())
shint = tmp;
}
const int fw = frameWidth();
const int width = shint.width() + fw * 2 + 30;
const int height = shint.height() * visibleItems + fw * 2;
// Determine the position, keeping the popup on the screen
const QRect cursorRect = m_editor->cursorRect(startPos);
const QDesktopWidget *desktop = QApplication::desktop();
QWidget *editorWidget = m_editor->widget();
#ifdef Q_WS_MAC
const QRect screen = desktop->availableGeometry(desktop->screenNumber(editorWidget));
#else
const QRect screen = desktop->screenGeometry(desktop->screenNumber(editorWidget));
#endif
QPoint pos = cursorRect.bottomLeft();
pos.rx() -= 16 + fw; // Space for the icons
if (pos.y() + height > screen.bottom())
pos.setY(cursorRect.top() - height);
if (pos.x() + width > screen.right())
pos.setX(screen.right() - width);
setGeometry(pos.x(), pos.y(), width, height);
}
CompletionListView::CompletionListView(CompletionSupport *support, ITextEditable *editor, CompletionWidget *completionWidget)
: QListView(completionWidget),
m_blockFocusOut(false),
m_quickFix(false),
m_editor(editor),
m_editorWidget(editor->widget()),
m_model(0),
m_completionWidget(completionWidget),
m_model(new AutoCompletionModel(this)),
m_support(support)
{
QTC_ASSERT(m_editorWidget, return);
@@ -112,30 +224,17 @@ CompletionWidget::CompletionWidget(CompletionSupport *support, ITextEditable *ed
setUniformItemSizes(true);
setSelectionBehavior(QAbstractItemView::SelectItems);
setSelectionMode(QAbstractItemView::SingleSelection);
connect(this, SIGNAL(activated(const QModelIndex &)),
this, SLOT(completionActivated(const QModelIndex &)));
// We disable the frame on this list view and use a QFrame around it instead.
// This improves the look with QGTKStyle.
m_popupFrame = new QFrame(0, Qt::Popup);
#ifndef Q_WS_MAC
m_popupFrame->setFrameStyle(frameStyle());
#endif
setFrameStyle(QFrame::NoFrame);
setParent(m_popupFrame);
m_popupFrame->setObjectName("m_popupFrame");
m_popupFrame->setAttribute(Qt::WA_DeleteOnClose);
QVBoxLayout *layout = new QVBoxLayout(m_popupFrame);
layout->setMargin(0);
layout->addWidget(this);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
m_popupFrame->setMinimumSize(1, 1);
setMinimumSize(1, 1);
setModel(m_model);
}
bool CompletionWidget::event(QEvent *e)
CompletionListView::~CompletionListView()
{
}
bool CompletionListView::event(QEvent *e)
{
if (m_blockFocusOut)
return QListView::event(e);
@@ -151,7 +250,7 @@ bool CompletionWidget::event(QEvent *e)
index = currentIndex();
}
#endif
closeList(index);
m_completionWidget->closeList(index);
return true;
} else if (e->type() == QEvent::ShortcutOverride) {
QKeyEvent *ke = static_cast<QKeyEvent *>(e);
@@ -162,7 +261,6 @@ bool CompletionWidget::event(QEvent *e)
if (ke->modifiers() == Qt::ControlModifier)
{
e->accept();
QModelIndex oldIndex = currentIndex();
int change = (ke->key() == Qt::Key_N) ? 1 : -1;
int nrows = model()->rowCount();
int row = currentIndex().row();
@@ -181,18 +279,22 @@ bool CompletionWidget::event(QEvent *e)
if (ke->modifiers() == Qt::ControlModifier)
forwardKeys = false;
break;
case Qt::Key_Escape:
closeList();
m_completionWidget->closeList();
return true;
case Qt::Key_Right:
case Qt::Key_Left:
break;
case Qt::Key_Tab:
case Qt::Key_Return:
//independently from style, accept current entry if return is pressed
if (qApp->focusWidget() == this)
closeList(currentIndex());
m_completionWidget->closeList(currentIndex());
return true;
case Qt::Key_Up:
if (!ke->isAutoRepeat()
&& currentIndex().row() == 0) {
@@ -201,17 +303,22 @@ bool CompletionWidget::event(QEvent *e)
}
forwardKeys = false;
break;
case Qt::Key_Down:
if (!ke->isAutoRepeat()
&& currentIndex().row() == model()->rowCount()-1) {
setCurrentIndex(model()->index(0, 0));
return true;
}
forwardKeys = false;
break;
case Qt::Key_Enter:
case Qt::Key_PageDown:
case Qt::Key_PageUp:
forwardKeys = false;
break;
default:
// if a key is forwarded, completion widget is re-opened and selected item is reset to first,
// so only forward keys that insert text and refine the completed item
@@ -233,41 +340,19 @@ bool CompletionWidget::event(QEvent *e)
return QListView::event(e);
}
void CompletionWidget::keyboardSearch(const QString &search)
void CompletionListView::keyboardSearch(const QString &search)
{
Q_UNUSED(search)
}
void CompletionWidget::closeList(const QModelIndex &index)
{
m_blockFocusOut = true;
if (index.isValid())
emit itemSelected(m_model->itemAt(index));
close();
if (m_popupFrame) {
m_popupFrame->close();
m_popupFrame = 0;
}
emit completionListClosed();
m_blockFocusOut = false;
}
void CompletionWidget::setQuickFix(bool quickFix)
void CompletionListView::setQuickFix(bool quickFix)
{
m_quickFix = quickFix;
}
void CompletionWidget::setCompletionItems(const QList<TextEditor::CompletionItem> &completionItems)
void CompletionListView::setCompletionItems(const QList<TextEditor::CompletionItem> &completionItems)
{
if (!m_model) {
m_model = new AutoCompletionModel(this, completionItems);
setModel(m_model);
} else {
m_model->setItems(completionItems);
}
m_model->setItems(completionItems);
// Select the first of the most relevant completion items
int relevance = INT_MIN;
@@ -283,56 +368,14 @@ void CompletionWidget::setCompletionItems(const QList<TextEditor::CompletionItem
setCurrentIndex(m_model->index(mostRelevantIndex));
}
void CompletionWidget::showCompletions(int startPos)
void CompletionListView::closeList(const QModelIndex &index)
{
updatePositionAndSize(startPos);
m_popupFrame->show();
show();
setFocus();
}
void CompletionWidget::updatePositionAndSize(int startPos)
{
// Determine size by calculating the space of the visible items
int visibleItems = m_model->rowCount();
if (visibleItems > NUMBER_OF_VISIBLE_ITEMS)
visibleItems = NUMBER_OF_VISIBLE_ITEMS;
const QStyleOptionViewItem &option = viewOptions();
QSize shint;
for (int i = 0; i < visibleItems; ++i) {
QSize tmp = itemDelegate()->sizeHint(option, m_model->index(i));
if (shint.width() < tmp.width())
shint = tmp;
}
const int frameWidth = m_popupFrame->frameWidth();
const int width = shint.width() + frameWidth * 2 + 30;
const int height = shint.height() * visibleItems + frameWidth * 2;
// Determine the position, keeping the popup on the screen
const QRect cursorRect = m_editor->cursorRect(startPos);
const QDesktopWidget *desktop = QApplication::desktop();
#ifdef Q_WS_MAC
const QRect screen = desktop->availableGeometry(desktop->screenNumber(m_editorWidget));
#else
const QRect screen = desktop->screenGeometry(desktop->screenNumber(m_editorWidget));
#endif
QPoint pos = cursorRect.bottomLeft();
pos.rx() -= 16 + frameWidth; // Space for the icons
if (pos.y() + height > screen.bottom())
pos.setY(cursorRect.top() - height);
if (pos.x() + width > screen.right())
pos.setX(screen.right() - width);
m_popupFrame->setGeometry(pos.x(), pos.y(), width, height);
}
void CompletionWidget::completionActivated(const QModelIndex &index)
{
closeList(index);
m_blockFocusOut = true;
if (index.isValid())
emit itemSelected(m_model->itemAt(index));
emit completionListClosed();
m_blockFocusOut = false;
}