Design mode/Qt Designer clean-up, part III: Resources.

Move resource code to new ResourceHandler class and
instantiate it on the form window.

src/plugins/designer/resourcehandler.cpp

@@ -0,0 +1,158 @@
+/**************************************************************************
+**
+** 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 "resourcehandler.h"
+#include "designerconstants.h"
+
+#include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/projectnodes.h>
+#include <projectexplorer/nodesvisitor.h>
+#include <projectexplorer/project.h>
+#include <projectexplorer/session.h>
+
+#include "qt_private/formwindowbase_p.h"
+#include "qt_private/qtresourcemodel_p.h"
+
+#include <utils/qtcassert.h>
+
+using ProjectExplorer::NodesVisitor;
+using ProjectExplorer::ProjectNode;
+using ProjectExplorer::FolderNode;
+using ProjectExplorer::FileNode;
+
+namespace Designer {
+namespace Internal {
+
+// Visit project nodes and collect qrc-files.
+class QrcFilesVisitor : public NodesVisitor
+{
+public:
+    QStringList qrcFiles() const;
+
+    void visitProjectNode(ProjectNode *node);
+    void visitFolderNode(FolderNode *node);
+private:
+    QStringList m_qrcFiles;
+};
+
+QStringList QrcFilesVisitor::qrcFiles() const
+{
+    return m_qrcFiles;
+}
+
+void QrcFilesVisitor::visitProjectNode(ProjectNode *projectNode)
+{
+    visitFolderNode(projectNode);
+}
+
+void QrcFilesVisitor::visitFolderNode(FolderNode *folderNode)
+{
+    foreach (const FileNode *fileNode, folderNode->fileNodes()) {
+        if (fileNode->fileType() == ProjectExplorer::ResourceType)
+            m_qrcFiles.append(fileNode->path());
+    }
+}
+
+// ------------ ResourceHandler
+ResourceHandler::ResourceHandler(qdesigner_internal::FormWindowBase *fw) :
+    QObject(fw),
+    m_form(fw),
+    m_sessionNode(0),
+    m_sessionWatcher(0)
+{
+}
+
+void ResourceHandler::ensureInitialized()
+{
+    if (m_sessionNode)
+        return;
+    ProjectExplorer::ProjectExplorerPlugin *pe = ProjectExplorer::ProjectExplorerPlugin::instance();
+    ProjectExplorer::SessionManager *session = pe->session();
+
+    m_sessionNode = session->sessionNode();
+    m_sessionWatcher = new ProjectExplorer::NodesWatcher();
+
+    connect(m_sessionWatcher, SIGNAL(filesAdded()), this, SLOT(updateResources()));
+    connect(m_sessionWatcher, SIGNAL(filesRemoved()), this, SLOT(updateResources()));
+    connect(m_sessionWatcher, SIGNAL(foldersAdded()), this, SLOT(updateResources()));
+    connect(m_sessionWatcher, SIGNAL(foldersRemoved()), this, SLOT(updateResources()));
+    m_sessionNode->registerWatcher(m_sessionWatcher);
+
+    m_originalUiQrcPaths = m_form->resourceSet()->activeQrcPaths();
+    if (Designer::Constants::Internal::debug)
+        qDebug() << "ResourceHandler::ensureInitialized() origPaths=" << m_originalUiQrcPaths;
+}
+
+ResourceHandler::~ResourceHandler()
+{
+    // Close: Delete the Designer form window via embedding widget
+    if (m_sessionNode && m_sessionWatcher) {
+        m_sessionNode->unregisterWatcher(m_sessionWatcher);
+        delete m_sessionWatcher;
+    }
+}
+
+void ResourceHandler::updateResources()
+{
+    ensureInitialized();
+
+    const QString fileName = m_form->fileName();
+    QTC_ASSERT(!fileName.isEmpty(), return)
+
+    if (Designer::Constants::Internal::debug)
+        qDebug() << "ResourceHandler::updateResources()" << fileName;
+
+    ProjectExplorer::ProjectExplorerPlugin *pe = ProjectExplorer::ProjectExplorerPlugin::instance();
+    // filename could change in the meantime.
+    ProjectExplorer::Project *project = pe->session()->projectForFile(fileName);
+
+    // Does the file belong to a project?
+    if (project) {
+        // Collect project resource files.
+        ProjectNode *root = project->rootProjectNode();
+        QrcFilesVisitor qrcVisitor;
+        root->accept(&qrcVisitor);
+        const QStringList projectQrcFiles = qrcVisitor.qrcFiles();
+        m_form->resourceSet()->activateQrcPaths(projectQrcFiles);
+        m_form->setSaveResourcesBehaviour(qdesigner_internal::FormWindowBase::SaveOnlyUsedQrcFiles);
+        if (Designer::Constants::Internal::debug)
+            qDebug() << "ResourceHandler::updateResources()" << fileName
+                    << " associated with project" << project->rootProjectNode()->path()
+                    <<  " using project qrc files" << projectQrcFiles.size();
+    } else {
+        // Use resource file originally used in form
+        m_form->resourceSet()->activateQrcPaths(m_originalUiQrcPaths);
+        m_form->setSaveResourcesBehaviour(qdesigner_internal::FormWindowBase::SaveAll);
+        if (Designer::Constants::Internal::debug)
+            qDebug() << "ResourceHandler::updateResources()" << fileName << " not associated with project, using loaded qrc files.";
+    }
+}
+
+} // namespace Internal
+} // namespace Designer