Added infrastructure to change multiple files at once.

src/plugins/texteditor/refactoringchanges.cpp

@@ -0,0 +1,191 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "refactoringchanges.h"
+
+#include <coreplugin/editormanager/editormanager.h>
+#include <extensionsystem/pluginmanager.h>
+
+#include <QtCore/QFile>
+#include <QtCore/QSet>
+#include <QtGui/QTextBlock>
+
+using namespace TextEditor;
+
+RefactoringChanges::~RefactoringChanges()
+{}
+
+void RefactoringChanges::createFile(const QString &fileName, const QString &contents)
+{
+    m_contentsByCreatedFile.insert(fileName, contents);
+}
+
+void RefactoringChanges::changeFile(const QString &fileName, const Utils::ChangeSet &changeSet)
+{
+    m_changesByFile.insert(fileName, changeSet);
+}
+
+void RefactoringChanges::reindent(const QString &fileName, const Range &range)
+{
+    m_indentRangesByFile[fileName].append(range);
+}
+
+QStringList RefactoringChanges::apply()
+{
+    QSet<QString> changed;
+
+    { // create files
+        foreach (const QString &fileName, m_contentsByCreatedFile.keys()) {
+            BaseTextEditor *editor = editorForNewFile(fileName);
+            if (editor == 0)
+                continue;
+
+            QTextCursor tc = editor->textCursor();
+            tc.beginEditBlock();
+            tc.setPosition(0);
+            tc.insertText(m_contentsByCreatedFile.value(fileName));
+
+            foreach (const Range &range, m_indentRangesByFile.value(fileName, QList<Range>())) {
+                QTextCursor indentCursor = editor->textCursor();
+                indentCursor.setPosition(range.begin);
+                indentCursor.setPosition(range.end, QTextCursor::KeepAnchor);
+                editor->indentInsertedText(indentCursor);
+            }
+
+            tc.endEditBlock();
+            changed.insert(fileName);
+        }
+    }
+
+    { // change and indent files
+        foreach (const QString &fileName, m_changesByFile.keys()) {
+            BaseTextEditor *editor = editorForFile(fileName, true);
+            if (editor == 0)
+                continue;
+
+            QTextCursor tc = editor->textCursor();
+            tc.beginEditBlock();
+
+            typedef QPair<QTextCursor, QTextCursor> CursorPair;
+            QList<CursorPair> cursorPairs;
+            foreach (const Range &range, m_indentRangesByFile.value(fileName, QList<Range>())) {
+                QTextCursor start = editor->textCursor();
+                QTextCursor end = editor->textCursor();
+                start.setPosition(range.begin);
+                end.setPosition(range.end);
+                cursorPairs.append(qMakePair(start, end));
+            }
+
+            QTextCursor changeSetCursor = editor->textCursor();
+            Utils::ChangeSet changeSet = m_changesByFile[fileName];
+            changeSet.apply(&changeSetCursor);
+
+            foreach (const CursorPair &cursorPair, cursorPairs) {
+                QTextCursor indentCursor = cursorPair.first;
+                indentCursor.setPosition(cursorPair.second.position(),
+                                         QTextCursor::KeepAnchor);
+                editor->indentInsertedText(indentCursor);
+            }
+
+            tc.endEditBlock();
+            changed.insert(fileName);
+        }
+    }
+
+    { // Indent files which are not changed
+        foreach (const QString &fileName, m_indentRangesByFile.keys()) {
+            BaseTextEditor *editor = editorForFile(fileName);
+
+            if (editor == 0)
+                continue;
+
+            if (changed.contains(fileName))
+                continue;
+
+            QTextCursor tc = editor->textCursor();
+            tc.beginEditBlock();
+
+            foreach (const Range &range, m_indentRangesByFile.value(fileName, QList<Range>())) {
+                QTextCursor indentCursor = editor->textCursor();
+                indentCursor.setPosition(range.begin);
+                indentCursor.setPosition(range.end, QTextCursor::KeepAnchor);
+                editor->indentInsertedText(indentCursor);
+            }
+
+            tc.endEditBlock();
+            changed.insert(fileName);
+        }
+    }
+
+    { // Delete files
+        // ###
+    }
+
+    return changed.toList();
+}
+
+int RefactoringChanges::positionInFile(const QString &fileName, int line, int column) const
+{
+    if (BaseTextEditor *editor = editorForFile(fileName)) {
+        return editor->document()->findBlockByNumber(line).position() + column;
+    } else {
+        return -1;
+    }
+}
+
+BaseTextEditor *RefactoringChanges::editorForFile(const QString &fileName,
+                                                  bool openIfClosed)
+{
+    Core::EditorManager *editorManager = Core::EditorManager::instance();
+
+    const QList<Core::IEditor *> editors = editorManager->editorsForFileName(fileName);
+    foreach (Core::IEditor *editor, editors) {
+        BaseTextEditor *textEditor = qobject_cast<BaseTextEditor *>(editor->widget());
+        if (textEditor != 0)
+            return textEditor;
+    }
+
+    if (!openIfClosed)
+        return 0;
+
+    Core::IEditor *editor = editorManager->openEditor(fileName, QString(),
+                                                      Core::EditorManager::NoActivate | Core::EditorManager::IgnoreNavigationHistory | Core::EditorManager::NoModeSwitch);
+    return qobject_cast<BaseTextEditor *>(editor->widget());
+}
+
+BaseTextEditor *RefactoringChanges::editorForNewFile(const QString &fileName)
+{
+    QFile f(fileName);
+    if (f.exists())
+        return 0;
+    if (!f.open(QIODevice::Append))
+        return 0;
+    f.close();
+    return editorForFile(fileName, true);
+}