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>

src/plugins/android/Java.mimetypes.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
+    <mime-type type="text/x-java">
+        <sub-class-of type="text/x-csrc"/>
+        <comment>Java Source file</comment>
+        <glob pattern="*.java"/>
+    </mime-type>
+</mime-info>

src/plugins/android/android.pro

@@ -49,7 +49,12 @@ HEADERS += \
     createandroidmanifestwizard.h \
     androidpotentialkit.h \
     androidextralibrarylistmodel.h \
-    androidsignaloperation.h
+    androidsignaloperation.h \
+    javaeditor.h \
+    javaeditorfactory.h \
+    javaindenter.h \
+    javaautocompleter.h \
+    javacompletionassistprovider.h
 
 SOURCES += \
     androidconfigurations.cpp \
@@ -93,7 +98,12 @@ SOURCES += \
     createandroidmanifestwizard.cpp \
     androidpotentialkit.cpp \
     androidextralibrarylistmodel.cpp \
-    androidsignaloperation.cpp
+    androidsignaloperation.cpp \
+    javaeditor.cpp \
+    javaeditorfactory.cpp \
+    javaindenter.cpp \
+    javaautocompleter.cpp \
+    javacompletionassistprovider.cpp
 
 FORMS += \
     androidsettingswidget.ui \

src/plugins/android/android.qbs

@@ -112,6 +112,16 @@ QtcPlugin {
         "certificatesmodel.h",
         "createandroidmanifestwizard.cpp",
         "createandroidmanifestwizard.h",
+        "javaautocompleter.cpp",
+        "javaautocompleter.h",
+        "javacompletionassistprovider.cpp",
+        "javacompletionassistprovider.h",
+        "javaeditor.cpp",
+        "javaeditor.h",
+        "javaeditorfactory.cpp",
+        "javaeditorfactory.h",
+        "javaindenter.cpp",
+        "javaindenter.h",
         "javaparser.cpp",
         "javaparser.h",
     ]

src/plugins/android/android.qrc

 <RCC>
     <qresource prefix="/android">
         <file>images/QtAndroid.png</file>
+        <file>Java.mimetypes.xml</file>
     </qresource>
 </RCC>

src/plugins/android/androidconstants.h

@@ -67,6 +67,9 @@ const char ANDROID_MANIFEST_EDITOR_ID[] = "Android.AndroidManifestEditor.Id";
 const char ANDROID_MANIFEST_EDITOR_CONTEXT[] = "Android.AndroidManifestEditor.Id";
 
 const char ANDROID_BUILDDIRECTORY[] = "android-build";
+const char JAVA_EDITOR_ID[] = "java.editor";
+const char C_JAVA_EDITOR[] = "Java Editor";
+const char JAVA_MIMETYPE[] = "text/x-java";
 } // namespace Constants;
 } // namespace Android
 

src/plugins/android/androidplugin.cpp

@@ -46,6 +46,8 @@
 #include "androidgdbserverkitinformation.h"
 #include "androidmanifesteditorfactory.h"
 #include "androidpotentialkit.h"
+#include "javaeditorfactory.h"
+#include "javacompletionassistprovider.h"
 #ifdef HAVE_QBS
 #  include "androidqbspropertyprovider.h"
 #endif
@@ -83,6 +85,8 @@ bool AndroidPlugin::initialize(const QStringList &arguments, QString *errorMessa
     addAutoReleasedObject(new Internal::AndroidDeployConfigurationFactory);
     addAutoReleasedObject(new Internal::AndroidDeviceFactory);
     addAutoReleasedObject(new Internal::AndroidPotentialKit);
+    addAutoReleasedObject(new Internal::JavaEditorFactory);
+    addAutoReleasedObject(new Internal::JavaCompletionAssistProvider);
     ProjectExplorer::KitManager::registerKitInformation(new Internal::AndroidGdbServerKitInformation);
 
     // AndroidManifest.xml editor
@@ -99,6 +103,9 @@ bool AndroidPlugin::initialize(const QStringList &arguments, QString *errorMessa
     }
     addAutoReleasedObject(new Internal::AndroidManifestEditorFactory);
 
+    if (!Core::MimeDatabase::addMimeTypes(QLatin1String(":android/Java.mimetypes.xml"), errorMessage))
+        return false;
+
     connect(ProjectExplorer::KitManager::instance(), SIGNAL(kitsLoaded()),
             this, SLOT(kitsRestored()));
 

src/plugins/android/javaautocompleter.cpp

+/****************************************************************************
+**
+** 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 "javaautocompleter.h"
+
+using namespace Android;
+using namespace Android::Internal;
+
+JavaAutoCompleter::JavaAutoCompleter()
+{
+}
+
+bool JavaAutoCompleter::contextAllowsAutoParentheses(const QTextCursor &cursor, const QString &textToInsert) const
+{
+    Q_UNUSED(cursor)
+    Q_UNUSED(textToInsert)
+    return true;
+}

src/plugins/android/javaautocompleter.h

+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#ifndef JAVAAUTOCOMPLETER_H
+#define JAVAAUTOCOMPLETER_H
+
+#include <texteditor/autocompleter.h>
+
+namespace Android {
+namespace Internal {
+
+class JavaAutoCompleter : public TextEditor::AutoCompleter
+{
+public:
+    // TODO What does the base class do?
+    // I only need the contextAllowsAutoParenthses change
+    JavaAutoCompleter();
+    bool contextAllowsAutoParentheses(const QTextCursor &cursor,
+                                      const QString &textToInsert = QString()) const;
+};
+}
+}
+
+
+#endif // JAVAAUTOCOMPLETER_H

src/plugins/android/javacompletionassistprovider.cpp

+/****************************************************************************
+**
+** 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 "javacompletionassistprovider.h"
+#include "androidconstants.h"
+
+#include <texteditor/codeassist/keywordscompletionassist.h>
+
+using namespace Android;
+using namespace Android::Internal;
+
+static const char *const keywords[] = {
+    "abstract",
+    "continue",
+    "for",
+    "new",
+    "switch",
+    "assert",
+    "default",
+    "goto",
+    "package",
+    "synchronized",
+    "boolean",
+    "do",
+    "if",
+    "private",
+    "this",
+    "break",
+    "double",
+    "implements",
+    "protected",
+    "throw"
+    "byte",
+    "else",
+    "import",
+    "public",
+    "throws",
+    "case",
+    "enum",
+    "instanceof",
+    "return",
+    "transient",
+    "catch",
+    "extends",
+    "int",
+    "short",
+    "try",
+    "char",
+    "final",
+    "interface",
+    "static",
+    "void",
+    "class",
+    "finally",
+    "long",
+    "strictfp",
+    "volatile",
+    "const",
+    "float",
+    "native",
+    "super",
+    "while",
+    0
+};
+
+JavaCompletionAssistProvider::JavaCompletionAssistProvider()
+{
+}
+
+JavaCompletionAssistProvider::~JavaCompletionAssistProvider()
+{
+
+}
+
+void JavaCompletionAssistProvider::init() const
+{
+    for (uint i = 0; i < sizeof keywords / sizeof keywords[0] - 1; i++)
+        m_keywords.append(QLatin1String(keywords[i]));
+}
+
+bool JavaCompletionAssistProvider::supportsEditor(const Core::Id &editorId) const
+{
+    return editorId == Constants::JAVA_EDITOR_ID;
+}
+
+TextEditor::IAssistProcessor *JavaCompletionAssistProvider::createProcessor() const
+{
+    if (m_keywords.isEmpty())
+        init();
+    TextEditor::Keywords keywords = TextEditor::Keywords(m_keywords,
+                                                         QStringList(),
+                                                         QMap<QString, QStringList>());
+    return new TextEditor::KeywordsCompletionAssistProcessor(keywords);
+}

src/plugins/android/javacompletionassistprovider.h

+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#ifndef JAVACOMPLETIONASSISTPROVIDER_H
+#define JAVACOMPLETIONASSISTPROVIDER_H
+
+#include <texteditor/codeassist/completionassistprovider.h>
+
+#include <QStringList>
+
+namespace Android {
+namespace Internal {
+
+class JavaCompletionAssistProvider : public TextEditor::CompletionAssistProvider
+{
+    Q_OBJECT
+public:
+    JavaCompletionAssistProvider();
+    ~JavaCompletionAssistProvider();
+
+    void init() const;
+
+    bool supportsEditor(const Core::Id &editorId) const;
+    TextEditor::IAssistProcessor *createProcessor() const;
+
+private:
+    mutable QStringList m_keywords;
+};
+
+}
+}
+
+
+#endif // JAVACOMPLETIONASSISTPROVIDER_H

src/plugins/android/javaeditor.cpp

+/****************************************************************************
+**
+** 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 "javaeditor.h"
+#include "javaindenter.h"
+#include "javaautocompleter.h"
+#include "androidconstants.h"
+#include "javacompletionassistprovider.h"
+
+#include <texteditor/texteditorsettings.h>
+#include <texteditor/texteditorconstants.h>
+#include <texteditor/normalindenter.h>
+#include <texteditor/highlighterutils.h>
+#include <coreplugin/mimedatabase.h>
+#include <extensionsystem/pluginmanager.h>
+
+#include <QFileInfo>
+
+using namespace Android;
+using namespace Android::Internal;
+
+//
+// JavaEditor
+//
+
+JavaEditor::JavaEditor(JavaEditorWidget *editor)
+  : BaseTextEditor(editor)
+{
+    setContext(Core::Context(Constants::C_JAVA_EDITOR,
+              TextEditor::Constants::C_TEXTEDITOR));
+}
+
+Core::IEditor *JavaEditor::duplicate()
+{
+    JavaEditorWidget *ret = new JavaEditorWidget(
+                qobject_cast<JavaEditorWidget*>(editorWidget()));
+    TextEditor::TextEditorSettings::initializeEditor(ret);
+    return ret->editor();
+}
+
+Core::Id JavaEditor::id() const
+{
+    return Core::Id(Constants::JAVA_EDITOR_ID);
+}
+
+TextEditor::CompletionAssistProvider *JavaEditor::completionAssistProvider()
+{
+    return ExtensionSystem::PluginManager::getObject<JavaCompletionAssistProvider>();
+}
+
+//
+// JavaEditorWidget
+//
+
+JavaEditorWidget::JavaEditorWidget(QWidget *parent)
+    : BaseTextEditorWidget(new JavaDocument(), parent)
+{
+    ctor();
+}
+
+JavaEditorWidget::JavaEditorWidget(JavaEditorWidget *other)
+    : BaseTextEditorWidget(other)
+{
+    ctor();
+}
+
+void JavaEditorWidget::ctor()
+{
+    m_commentDefinition.clearCommentStyles();
+    m_commentDefinition.singleLine = QLatin1String("//");
+    m_commentDefinition.multiLineStart = QLatin1String("/*");
+    m_commentDefinition.multiLineEnd = QLatin1String("*/");
+    setAutoCompleter(new JavaAutoCompleter);
+}
+
+void JavaEditorWidget::unCommentSelection()
+{
+    Utils::unCommentSelection(this, m_commentDefinition);
+}
+
+TextEditor::BaseTextEditor *JavaEditorWidget::createEditor()
+{
+    return new JavaEditor(this);
+}
+
+//
+// JavaDocument
+//
+
+JavaDocument::JavaDocument()
+        : TextEditor::BaseTextDocument()
+{
+    setMimeType(QLatin1String(Constants::JAVA_MIMETYPE));
+    setSyntaxHighlighter(TextEditor::createGenericSyntaxHighlighter(Core::MimeDatabase::findByType(QLatin1String(Constants::JAVA_MIMETYPE))));
+    setIndenter(new JavaIndenter);
+}
+
+QString JavaDocument::defaultPath() const
+{
+    QFileInfo fi(filePath());
+    return fi.absolutePath();
+}
+
+QString JavaDocument::suggestedFileName() const
+{
+    QFileInfo fi(filePath());
+    return fi.fileName();
+}

src/plugins/android/javaeditor.h

+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#ifndef JAVAEDITOR_H
+#define JAVAEDITOR_H
+
+#include <texteditor/basetextdocument.h>
+#include <texteditor/basetexteditor.h>
+#include <utils/uncommentselection.h>
+
+namespace Android {
+namespace Internal {
+
+class JavaEditorFactory;
+class JavaEditorWidget;
+
+class JavaEditor : public TextEditor::BaseTextEditor
+{
+    Q_OBJECT
+
+public:
+    JavaEditor(JavaEditorWidget *);
+
+    bool duplicateSupported() const { return true; }
+    Core::IEditor *duplicate();
+    Core::Id id() const;
+    TextEditor::CompletionAssistProvider *completionAssistProvider();
+};
+
+class JavaEditorWidget : public TextEditor::BaseTextEditorWidget
+{
+    Q_OBJECT
+
+public:
+    JavaEditorWidget(QWidget *parent = 0);
+    JavaEditorWidget(JavaEditorWidget *other);
+
+    void unCommentSelection();
+
+protected:
+    TextEditor::BaseTextEditor *createEditor();
+
+private:
+    JavaEditorWidget(BaseTextEditorWidget *); // avoid stupidity
+    void ctor();
+    Utils::CommentDefinition m_commentDefinition;
+};
+
+class JavaDocument : public TextEditor::BaseTextDocument
+{
+    Q_OBJECT
+
+public:
+    JavaDocument();
+    QString defaultPath() const;
+    QString suggestedFileName() const;
+};
+
+} // namespace Internal
+} // namespace QmakeProjectManager
+
+#endif // JAVAEDITOR_H

src/plugins/android/javaeditorfactory.cpp

+/****************************************************************************
+**
+** 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