Wizards: Make it possible to check existing files to overwrite.

Present a checkable list of files to be overwritten,
enabling re-generating a part of the project or class.

Task-number: QTCREATORBUG-4538

src/plugins/coreplugin/dialogs/promptoverwritedialog.cpp

@@ -0,0 +1,163 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**************************************************************************/
+
+#include "promptoverwritedialog.h"
+
+#include <utils/stringutils.h>
+
+#include <QtGui/QTreeView>
+#include <QtGui/QLabel>
+#include <QtGui/QStandardItemModel>
+#include <QtGui/QStandardItem>
+#include <QtGui/QDialogButtonBox>
+#include <QtGui/QVBoxLayout>
+
+#include <QtCore/QDir>
+
+enum { FileNameRole = Qt::UserRole + 1 };
+
+/*!
+    \class Core::Internal::PromptOverwriteDialog
+    \brief Prompts the user to overwrite a list of files, which he can check.
+
+    Displays the common folder and the files in a checkable list.
+*/
+
+static inline QString fileNameOfItem(const QStandardItem *item)
+{
+    return item->data(FileNameRole).toString();
+}
+
+namespace Core {
+namespace Internal {
+
+PromptOverwriteDialog::PromptOverwriteDialog(QWidget *parent) :
+    QDialog(parent),
+    m_label(new QLabel),
+    m_view(new QTreeView),
+    m_model(new QStandardItemModel(0, 1, this))
+{
+    setWindowTitle(tr("Overwrite Existing Files"));
+    setModal(true);
+    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
+    mainLayout->addWidget(m_label);
+    m_view->setRootIsDecorated(false);
+    m_view->setUniformRowHeights(true);
+    m_view->setHeaderHidden(true);
+    m_view->setSelectionMode(QAbstractItemView::NoSelection);
+    m_view->setModel(m_model);
+    mainLayout->addWidget(m_view);
+    QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Cancel);
+    connect(bb, SIGNAL(accepted()), this, SLOT(accept()));
+    connect(bb, SIGNAL(rejected()), this, SLOT(reject()));
+    mainLayout->addWidget(bb);
+}
+
+void PromptOverwriteDialog::setFiles(const QStringList &l)
+{
+    // Format checkable list excluding common path
+    const QString nativeCommonPath = QDir::toNativeSeparators(Utils::commonPath(l));
+    foreach (const QString &fileName, l) {
+        const QString nativeFileName = QDir::toNativeSeparators(fileName);
+        const int length = nativeFileName.size() - nativeCommonPath.size() - 1;
+        QStandardItem *item = new QStandardItem(nativeFileName.right(length));
+        item->setData(QVariant(fileName), FileNameRole);
+        item->setFlags(Qt::ItemIsEnabled);
+        item->setCheckable(true);
+        item->setCheckState(Qt::Checked);
+        m_model->appendRow(item);
+    }
+    const QString message =
+        tr("The following files already exist in the folder\n%1.\n"
+           "Would you like to overwrite them?").arg(nativeCommonPath);
+    m_label->setText(message);
+}
+
+QStandardItem *PromptOverwriteDialog::itemForFile(const QString &f) const
+{
+    const int rowCount = m_model->rowCount();
+    for (int r = 0; r < rowCount; ++r) {
+        QStandardItem *item = m_model->item(r, 0);
+        if (fileNameOfItem(item) == f)
+            return item;
+    }
+    return 0;
+}
+
+QStringList PromptOverwriteDialog::files(Qt::CheckState cs) const
+{
+    QStringList result;
+    const int rowCount = m_model->rowCount();
+    for (int r = 0; r < rowCount; ++r) {
+        const QStandardItem *item = m_model->item(r, 0);
+        if (item->checkState() == cs)
+            result.push_back(fileNameOfItem(item));
+    }
+    return result;
+}
+
+void PromptOverwriteDialog::setFileEnabled(const QString &f, bool e)
+{
+    if (QStandardItem *item = itemForFile(f)) {
+        Qt::ItemFlags flags = item->flags();
+        if (e) {
+            flags |= Qt::ItemIsEnabled;
+        } else {
+            flags &= ~Qt::ItemIsEnabled;
+        }
+        item->setFlags(flags);
+    }
+}
+
+bool PromptOverwriteDialog::isFileEnabled(const QString &f) const
+{
+    if (const QStandardItem *item = itemForFile(f))
+        return (item->flags() & Qt::ItemIsEnabled);
+    return false;
+}
+
+void PromptOverwriteDialog::setFileChecked(const QString &f, bool e)
+{
+    if (QStandardItem *item = itemForFile(f))
+        item->setCheckState(e ? Qt::Checked : Qt::Unchecked);
+}
+
+bool PromptOverwriteDialog::isFileChecked(const QString &f) const
+{
+    if (const QStandardItem *item = itemForFile(f))
+        return item->checkState() == Qt::Checked;
+    return false;
+}
+
+} // namespace Internal
+} // namespace Core