TextEditor: menu for pasting from clipboard history.

Add new action to show a menu of recent clipboard history. When an item
is selected, the item is pasted.

Change-Id: Id7e1a90730404fb63762bf1f20678484ec34cd2b
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Leandro Melo <leandro.melo@nokia.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/src/plugins/texteditor/circularclipboardassist.cpp b/src/plugins/texteditor/circularclipboardassist.cpp
new file mode 100644
index 0000000000..8ba1f9bb81
--- /dev/null
+++ b/src/plugins/texteditor/circularclipboardassist.cpp
@@ -0,0 +1,127 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@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 "circularclipboardassist.h"
+#include "codeassist/iassistprovider.h"
+#include "codeassist/iassistinterface.h"
+#include "codeassist/iassistprocessor.h"
+#include "codeassist/iassistproposal.h"
+#include "codeassist/basicproposalitem.h"
+#include "codeassist/basicproposalitemlistmodel.h"
+#include "codeassist/genericproposal.h"
+#include "basetexteditor.h"
+#include "circularclipboard.h"
+
+#include <coreplugin/coreconstants.h>
+
+#include <QApplication>
+#include <QClipboard>
+
+using namespace TextEditor;
+using namespace TextEditor::Internal;
+
+namespace TextEditor {
+namespace Internal {
+
+class ClipboardProposalItem: public BasicProposalItem {
+public:
+    enum { maxLen = 80 };
+
+    ClipboardProposalItem(QSharedPointer<const QMimeData> mimeData): m_mimeData(mimeData)
+    {
+        QString text = mimeData->text().simplified();
+        if (text.length() > maxLen) {
+            text.truncate(maxLen);
+            text.append(QLatin1String("..."));
+        }
+        setText(text);
+    }
+
+    virtual void apply(BaseTextEditor *editor, int /*basePosition*/) const
+    {
+        BaseTextEditorWidget *editwidget = editor->editorWidget();
+
+        //Move to last in circular clipboard
+        if (CircularClipboard * clipboard = CircularClipboard::instance()) {
+            clipboard->collect(m_mimeData);
+            clipboard->toLastCollect();
+        }
+
+        //Copy the selected item
+        QApplication::clipboard()->setMimeData(editwidget->duplicateMimeData(m_mimeData.data()));
+
+        //Paste
+        editwidget->paste();
+    }
+
+private:
+    QSharedPointer<const QMimeData> m_mimeData;
+};
+
+class ClipboardAssistProcessor: public IAssistProcessor
+{
+public:
+    IAssistProposal *perform(const IAssistInterface *interface)
+    {
+        if (!interface)
+            return 0;
+
+        QScopedPointer<const IAssistInterface> assistInterface(interface);
+
+        QIcon icon = QIcon::fromTheme(QLatin1String("edit-paste"), QIcon(QLatin1String(Core::Constants::ICON_PASTE))).pixmap(16);
+        CircularClipboard * clipboard = CircularClipboard::instance();
+        QList<BasicProposalItem *> items;
+        for (int i = 0; i < clipboard->size(); ++i) {
+            QSharedPointer<const QMimeData> data = clipboard->next();
+
+            BasicProposalItem *item = new ClipboardProposalItem(data);
+            item->setIcon(icon);
+            item->setOrder(clipboard->size() - 1 - i);
+            items.append(item);
+        }
+
+        return new GenericProposal(interface->position(), new BasicProposalItemListModel(items));
+    }
+};
+
+} // namespace Internal
+} // namespace TextEditor
+
+bool ClipboardAssistProvider::supportsEditor(const Core::Id &/*editorId*/) const
+{
+    return true;
+}
+
+IAssistProcessor *ClipboardAssistProvider::createProcessor() const
+{
+    return new ClipboardAssistProcessor;
+}