Android: Add minimal Java editing support

Indentation for blocks '{'. '}' and completion for keywords.

TODO: "New File" is missing,
TODO: probably needs some tweaks to the indentation.
Task-number: QTCREATORBUG-11220

Change-Id: I758b3815e47d1427d39c0248eb16e39ffb7a29fb
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/src/plugins/android/javaindenter.cpp b/src/plugins/android/javaindenter.cpp
new file mode 100644
index 0000000000..51cfd1c930
--- /dev/null
+++ b/src/plugins/android/javaindenter.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "javaindenter.h"
+#include <texteditor/tabsettings.h>
+
+#include <QTextDocument>
+
+using namespace Android;
+using namespace Android::Internal;
+
+JavaIndenter::JavaIndenter()
+{
+}
+
+JavaIndenter::~JavaIndenter()
+{}
+
+bool JavaIndenter::isElectricCharacter(const QChar &ch) const
+{
+    if (ch == QLatin1Char('{')
+            || ch == QLatin1Char('}')) {
+        return true;
+    }
+    return false;
+}
+
+void JavaIndenter::indentBlock(QTextDocument *doc,
+                                 const QTextBlock &block,
+                                 const QChar &typedChar,
+                                 const TextEditor::TabSettings &tabSettings)
+{
+    // At beginning: Leave as is.
+    if (block == doc->begin())
+        return;
+
+    const int tabsize = tabSettings.m_indentSize;
+
+    QTextBlock previous = block.previous();
+    QString previousText = previous.text();
+    while (previousText.trimmed().isEmpty()) {
+        previous = previous.previous();
+        if (previous == doc->begin())
+            return;
+        previousText = previous.text();
+    }
+
+    int adjust = 0;
+    if (previousText.contains(QLatin1Char('{')))
+        adjust = tabsize;
+
+    if (block.text().contains(QLatin1Char('}')) || typedChar == QLatin1Char('}'))
+        adjust += -tabsize;
+
+    // Count the indentation of the previous line.
+    int i = 0;
+    while (i < previousText.size()) {
+        if (!previousText.at(i).isSpace()) {
+            tabSettings.indentLine(block, tabSettings.columnAt(previousText, i)
+                                   + adjust);
+            break;
+        }
+        ++i;
+    }
+}