Move PathChooserDelegate to Utils

Change-Id: I94b3c0b60477145f0f084719fc1cf5f3f4a98534
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/libs/utils/delegates.cpp

@@ -0,0 +1,177 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "delegates.h"
+
+#include <QPainter>
+#include <QApplication>
+
+using namespace Utils;
+
+AnnotatedItemDelegate::AnnotatedItemDelegate(QObject *parent) : QStyledItemDelegate(parent)
+{}
+
+AnnotatedItemDelegate::~AnnotatedItemDelegate() = default;
+
+void AnnotatedItemDelegate::setAnnotationRole(int role)
+{
+    m_annotationRole = role;
+}
+
+int AnnotatedItemDelegate::annotationRole() const
+{
+    return m_annotationRole;
+}
+
+void AnnotatedItemDelegate::setDelimiter(const QString &delimiter)
+{
+    m_delimiter = delimiter;
+}
+
+const QString &AnnotatedItemDelegate::delimiter() const
+{
+    return m_delimiter;
+}
+
+void AnnotatedItemDelegate::paint(QPainter *painter,
+                                  const QStyleOptionViewItem &option,
+                                  const QModelIndex &index) const
+{
+    QStyleOptionViewItem opt = option;
+    initStyleOption(&opt, index);
+
+    QStyle *style = QApplication::style();
+    style->drawPrimitive(QStyle::PE_PanelItemViewItem, &opt, painter, opt.widget);
+    style->drawControl(QStyle::CE_ItemViewItem, &opt, painter, opt.widget);
+
+    QString annotation = index.data(m_annotationRole).toString();
+    if (!annotation.isEmpty()) {
+
+        int newlinePos = annotation.indexOf(QLatin1Char('\n'));
+        if (newlinePos != -1) {
+            // print first line with '...' at end
+            const QChar ellipsisChar(0x2026);
+            annotation = annotation.left(newlinePos) + ellipsisChar;
+        }
+
+        QPalette disabled(opt.palette);
+        disabled.setCurrentColorGroup(QPalette::Disabled);
+
+        painter->save();
+        painter->setPen(disabled.color(QPalette::WindowText));
+
+        static int extra = opt.fontMetrics.width(m_delimiter) + 10;
+        const QPixmap &pixmap = opt.icon.pixmap(opt.decorationSize);
+        const QRect &iconRect = style->itemPixmapRect(opt.rect, opt.decorationAlignment, pixmap);
+        const QRect &displayRect = style->itemTextRect(opt.fontMetrics, opt.rect,
+            opt.displayAlignment, true, index.data(Qt::DisplayRole).toString());
+        QRect annotationRect = style->itemTextRect(opt.fontMetrics, opt.rect,
+            opt.displayAlignment, true, annotation);
+        annotationRect.adjust(iconRect.width() + displayRect.width() + extra, 0,
+                              iconRect.width() + displayRect.width() + extra, 0);
+
+        QApplication::style()->drawItemText(painter, annotationRect,
+            Qt::AlignLeft | Qt::AlignBottom, disabled, true, annotation);
+
+        painter->restore();
+    }
+}
+
+QSize AnnotatedItemDelegate::sizeHint(const QStyleOptionViewItem &option,
+                                      const QModelIndex &index) const
+{
+    QStyleOptionViewItem opt = option;
+    initStyleOption(&opt, index);
+
+    const QString &annotation = index.data(m_annotationRole).toString();
+    if (!annotation.isEmpty())
+        opt.text += m_delimiter + annotation;
+
+    return QApplication::style()->sizeFromContents(QStyle::CT_ItemViewItem, &opt, QSize(), nullptr);
+}
+
+PathChooserDelegate::PathChooserDelegate(QObject *parent)
+    : QStyledItemDelegate(parent)
+    , m_kind(Utils::PathChooser::ExistingDirectory)
+{
+}
+
+void PathChooserDelegate::setExpectedKind(Utils::PathChooser::Kind kind)
+{
+    m_kind = kind;
+}
+
+void PathChooserDelegate::setPromptDialogFilter(const QString &filter)
+{
+    m_filter = filter;
+}
+
+QWidget *PathChooserDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
+{
+    Q_UNUSED(option);
+    Q_UNUSED(index);
+
+    Utils::PathChooser *editor = new Utils::PathChooser(parent);
+
+    editor->setHistoryCompleter(m_historyKey);
+    editor->setAutoFillBackground(true); // To hide the text beneath the editor widget
+    editor->lineEdit()->setMinimumWidth(0);
+
+    connect(editor, &Utils::PathChooser::browsingFinished, this, [this, editor]() {
+        emit const_cast<PathChooserDelegate*>(this)->commitData(editor);
+    });
+
+    return editor;
+}
+
+void PathChooserDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
+{
+    if (auto *pathChooser = qobject_cast<Utils::PathChooser *>(editor)) {
+        pathChooser->setExpectedKind(m_kind);
+        pathChooser->setPromptDialogFilter(m_filter);
+        pathChooser->setPath(index.model()->data(index, Qt::EditRole).toString());
+    }
+}
+
+void PathChooserDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
+{
+    Utils::PathChooser *pathChooser = qobject_cast<Utils::PathChooser *>(editor);
+    if (!pathChooser)
+        return;
+
+    model->setData(index, pathChooser->path(), Qt::EditRole);
+}
+
+void PathChooserDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
+{
+    Q_UNUSED(index);
+
+    editor->setGeometry(option.rect);
+}
+
+void PathChooserDelegate::setHistoryCompleter(const QString &key)
+{
+    m_historyKey = key;
+}