resourceeditor.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 981 行 · 第 1/2 页

/****************************************************************************
**
** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at [e-mail].
**
** In addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
** Exception version 1.0, which can be found at
** http://www.trolltech.com/products/qt/gplexception/ and in the file
** GPL_EXCEPTION.txt in this package.
**
** In addition, as a special exception, Trolltech, as the sole copyright
** holder for Qt Designer, grants users of the Qt/Eclipse Integration
** plug-in the right for the Qt/Eclipse Integration to link to
** functionality provided by Qt Designer and its related libraries.
**
** Trolltech reserves all rights not expressly granted herein.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

/*
TRANSLATOR qdesigner_internal::ResourceEditor
*/

#include "resourceeditor_p.h"
#include "ui_resourceeditor.h"
#include "resourcefile_p.h"
#include "iconloader_p.h"

#include <QtCore/QFileInfo>
#include <QtCore/QDir>
#include <QtCore/qdebug.h>
#include <QtGui/QTabWidget>
#include <QtGui/QVBoxLayout>
#include <QtGui/QHBoxLayout>
#include <QtGui/QComboBox>
#include <QtGui/QLabel>
#include <QtGui/QTreeView>
#include <QtGui/QItemSelectionModel>
#include <QtGui/QHeaderView>
#include <QtGui/QPushButton>
#include <QtGui/QLineEdit>
#include <QtGui/QFileDialog>
#include <QtGui/QMessageBox>
#include <QtGui/QToolButton>
#include <QtGui/QItemDelegate>
#include <QtGui/QKeyEvent>
#include <QtGui/QDrag>
#include <QtGui/QDockWidget>

#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerFormWindowManagerInterface>

#include <resourcefile_p.h>
#include <iconloader_p.h>

#include "ui_resourceeditor.h"
#include "resourceeditor_p.h"

namespace {
    enum { COMBO_EMPTY_DATA, COMBO_NEW_DATA, COMBO_OPEN_DATA };
}

namespace qdesigner_internal {

/******************************************************************************
** QrcItemDelegate
*/

class QrcItemDelegate : public QItemDelegate
{
    Q_OBJECT

public:
    QrcItemDelegate(QObject *parent = 0);
    virtual void setModelData(QWidget *editor,
                                QAbstractItemModel *model,
                                const QModelIndex &index) const;
    void setEditorData(QWidget *editor, const QModelIndex &index) const;
};

QrcItemDelegate::QrcItemDelegate(QObject *parent)
    : QItemDelegate(parent)
{
}

void QrcItemDelegate::setModelData(QWidget *_editor,
                            QAbstractItemModel *_model,
                            const QModelIndex &index) const
{
    QLineEdit *editor = qobject_cast<QLineEdit*>(_editor);
    if (editor == 0)
        return;

    ResourceModel *model = qobject_cast<ResourceModel*>(_model);
    if (model == 0)
        return;

    QString new_prefix = ResourceFile::fixPrefix(editor->text());
    QString old_prefix, file;
    model->getItem(index, old_prefix, file);

    if (old_prefix.isEmpty())
        return;

    if (old_prefix == new_prefix)
        return;

    model->changePrefix(index, new_prefix);
    if (!model->save())
        model->changePrefix(index, old_prefix);
}

void QrcItemDelegate::setEditorData(QWidget *_editor, const QModelIndex &index) const
{
    const ResourceModel *model = qobject_cast<const ResourceModel*>(index.model());
    if (model == 0)
        return;

    QLineEdit *editor = qobject_cast<QLineEdit*>(_editor);
    if (editor == 0)
        return;

    QString prefix, file;
    model->getItem(index, prefix, file);
    editor->setText(prefix);
}

/******************************************************************************
** QrcView
*/

class QrcView : public QTreeView
{
    Q_OBJECT
public:
    QrcView(QWidget *parent = 0);

protected:
    virtual void dragEnterEvent(QDragEnterEvent *);
    virtual void dragMoveEvent(QDragMoveEvent *);
    virtual void dragLeaveEvent(QDragLeaveEvent *);
    virtual void dropEvent(QDropEvent *);

private:
    bool acceptDrop(QDropEvent *event);
    QStringList mimeFileList(const QMimeData *mime);
    const QMimeData *m_last_mime_data;
    QStringList m_last_file_list;
};

QrcView::QrcView(QWidget *parent) :
    QTreeView(parent),
    m_last_mime_data(0)
{
    setItemDelegate(new QrcItemDelegate(this));
    setEditTriggers(QTreeView::DoubleClicked
                            | QTreeView::AnyKeyPressed);
    header()->hide();
    setAcceptDrops(true);
}

QStringList QrcView::mimeFileList(const QMimeData *mime)
{
    if (mime == m_last_mime_data)
        return m_last_file_list;

    m_last_mime_data = mime;
    m_last_file_list.clear();

    const QString uriList = QLatin1String("text/uri-list");
    if (!mime->hasFormat(uriList))
        return m_last_file_list;

    QByteArray data_list_str = mime->data(uriList);
    QList<QByteArray> data_list = data_list_str.split('\n');

    const QString filePrefix = QLatin1String("file:");
    foreach (QByteArray data, data_list) {
        const QString uri = QFile::decodeName(data.trimmed());
        if (uri.startsWith(filePrefix))
            m_last_file_list.append(uri.mid(filePrefix.size()));
    }

    return m_last_file_list;
}

bool QrcView::acceptDrop(QDropEvent *e)
{
    if (!(e->proposedAction() & Qt::CopyAction)) {
        e->ignore();
        return false;
    }

    if (mimeFileList(e->mimeData()).isEmpty()) {
        e->ignore();
        return false;
    }

    e->acceptProposedAction();

    return true;
}

void QrcView::dragEnterEvent(QDragEnterEvent *e)
{
    if (!acceptDrop(e))
        return;
}

void QrcView::dragMoveEvent(QDragMoveEvent *e)
{
    if (!acceptDrop(e))
        return;

    QModelIndex index = indexAt(e->pos());
    if (!index.isValid()) {
        e->ignore();
        return;
    }

    selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
}

void QrcView::dragLeaveEvent(QDragLeaveEvent*)
{
    m_last_mime_data = 0;
}

void QrcView::dropEvent(QDropEvent *e)
{
    if (!acceptDrop(e)) {
        m_last_mime_data = 0;
        return;
    }

    const QStringList file_list = mimeFileList(e->mimeData());
    m_last_mime_data = 0;

    const QModelIndex index = indexAt(e->pos());
    if (!index.isValid()) {
        e->ignore();
        return;
    }

    ResourceModel *model = qobject_cast<ResourceModel*>(this->model());
    Q_ASSERT(model != 0);

    const QModelIndex prefix_index = model->prefixIndex(index);
    const QModelIndex last_added_idx = model->addFiles(prefix_index, file_list);
    setExpanded(prefix_index, true);
    selectionModel()->setCurrentIndex(last_added_idx, QItemSelectionModel::ClearAndSelect);
}

/******************************************************************************
** EditableResourceModel
*/

class EditableResourceModel : public ResourceModel
{
    Q_OBJECT

public:
    EditableResourceModel(const ResourceFile &resource_file,
                          QObject *parent = 0);
    virtual Qt::ItemFlags flags(const QModelIndex &index) const;
    virtual QModelIndex addFiles(const QModelIndex &idx, const QStringList &file_list);
    virtual bool reload();
    virtual bool save();

private slots:
    void showWarning(const QString &caption, const QString &message);
};

EditableResourceModel::EditableResourceModel(const ResourceFile &resource_file,
                                             QObject *parent)
    : ResourceModel(resource_file, parent)
{
}

Qt::ItemFlags EditableResourceModel::flags(const QModelIndex &index) const
{
    QString prefix, file;
    getItem(index, prefix, file);

    if (file.isEmpty())
        return Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsEditable;

    const QIcon icon = qVariantValue<QIcon>(data(index, Qt::DecorationRole));
    if (!icon.isNull())
        return Qt::ItemIsDragEnabled | Qt::ItemIsSelectable | Qt::ItemIsEnabled;

    return Qt::ItemFlags();
}

QModelIndex EditableResourceModel::addFiles(const QModelIndex &idx,
                                            const QStringList &file_list)
{
    QModelIndex result;

    QStringList good_file_list;
    const QString upPath = QLatin1String("..");
    foreach (QString file, file_list) {
        if (!relativePath(file).startsWith(upPath ))
            good_file_list.append(file);
    }

    if (good_file_list.size() == file_list.size()) {
        result = ResourceModel::addFiles(idx, good_file_list);
    } else if (good_file_list.size() > 0) {
        QMessageBox msgBox(QMessageBox::Warning, tr("Invalid files"),
                           tr("Files referenced in a qrc must be in the qrc's "
                              "directory or one of its subdirectories:<p><b>%1</b><p>"
                              "Some of the selected files do not comply with this.")
                           .arg(absolutePath(QString())), QMessageBox::Cancel);
        QPushButton *insertButton = msgBox.addButton(tr("Only insert files which comply"), QMessageBox::AcceptRole);
        msgBox.setDefaultButton(insertButton);
        msgBox.exec();
        if (msgBox.clickedButton() == insertButton)
            result = ResourceModel::addFiles(idx, good_file_list);
    } else {
        QMessageBox::warning(0, tr("Invalid files"),
                                tr("Files referenced in a qrc must be in the qrc's "
                                    "directory or one of its subdirectories:<p><b>%1</b><p>"
                                    "The selected files do not comply with this.")
                                        .arg(absolutePath(QString())),
                                    QMessageBox::Cancel, QMessageBox::NoButton);
    }

    return result;
}

bool EditableResourceModel::reload()
{
    if (!ResourceModel::reload()) {
        QMetaObject::invokeMethod(this, "showWarning", Qt::QueuedConnection,
                                    Q_ARG(QString, tr("Error loading resource file")),
                                    Q_ARG(QString, tr("Failed to open \"%1\":\n%2")
                                                        .arg(fileName())
                                                        .arg(errorMessage())));
        return false;
    }
    return true;
}

bool EditableResourceModel::save()
{
    if (!ResourceModel::save()) {
        QMetaObject::invokeMethod(this, "showWarning", Qt::QueuedConnection,
                                    Q_ARG(QString, tr("Error saving resource file")),
                                    Q_ARG(QString, tr("Failed to save \"%1\":\n%2")
                                        .arg(fileName())
                                        .arg(errorMessage())));
        return false;
    }
    return true;
}

void EditableResourceModel::showWarning(const QString &caption, const QString &message)
{
    QMessageBox::warning(0, caption, message, QMessageBox::Ok, QMessageBox::NoButton);
}

/******************************************************************************
** ModelCache
*/

class ModelCache
{
public:
    ResourceModel *model(const QString &file);

private:
    typedef QList<ResourceModel*> ResourceModelList;
    ResourceModelList m_model_list;
};

Q_GLOBAL_STATIC(ModelCache, g_model_cache)

ResourceModel *ModelCache::model(const QString &file)
{
    if (file.isEmpty()) {
        ResourceModel *model = new EditableResourceModel(ResourceFile());
        m_model_list.append(model);
        return model;
    }

    if (!m_model_list.empty()) {
        const ResourceModelList::const_iterator cend = m_model_list.constEnd();
        for (ResourceModelList::const_iterator it = m_model_list.constBegin(); it !=  cend; ++it) {
            if ( (*it)->fileName() == file)
                return *it;
        }
    }

    ResourceFile rf(file);
    if (!rf.load()) {
        QMessageBox::warning(0, QApplication::translate("Designer", "Error opening resource file"),
                                QApplication::translate("Designer", "Failed to open \"%1\":\n%2")
                                    .arg(file).arg(rf.errorMessage()),
                                QMessageBox::Ok, QMessageBox::NoButton);
        return 0;
    }

    ResourceModel *model = new EditableResourceModel(rf);
    m_model_list.append(model);
    return model;
}

/******************************************************************************
** ResourceEditor
*/

ResourceEditor::ResourceEditor(QDesignerFormEditorInterface *core,
                               bool dragEnabled,
                               QWidget *parent):
    QWidget(parent),
    m_form(0),
    m_ignore_update(false),
    m_dragEnabled(dragEnabled)
{
    Ui::ResourceEditor ui;
    ui.setupUi(this);

    m_qrc_combo = ui.m_qrc_combo;
    m_qrc_stack = ui.m_qrc_stack;
    m_add_button = ui.m_add_button;
    m_remove_button = ui.m_remove_button;
    m_add_files_button = ui.m_add_files_button;
    m_remove_qrc_button = ui.m_remove_qrc_button;

    setEnabled(false);

    connect(core->formWindowManager(),
            SIGNAL(activeFormWindowChanged(QDesignerFormWindowInterface*)),
            this, SLOT(setActiveForm(QDesignerFormWindowInterface*)));
    connect(m_qrc_combo, SIGNAL(activated(int)),
            this, SLOT(setCurrentIndex(int)));

    m_remove_qrc_button->setIcon(createIconSet(QLatin1String("editdelete.png")));
    connect(m_remove_qrc_button, SIGNAL(clicked()), this, SLOT(removeCurrentView()));

    m_add_button->setIcon(createIconSet(QLatin1String("plus.png")));
    connect(m_add_button, SIGNAL(clicked()), this, SLOT(addPrefix()));
    m_remove_button->setIcon(createIconSet(QLatin1String("minus.png")));
    connect(m_remove_button, SIGNAL(clicked()), this, SLOT(deleteItem()));
    m_add_files_button->setIcon(createIconSet(QLatin1String("fileopen.png")));
    connect(m_add_files_button, SIGNAL(clicked()), this, SLOT(addFiles()));

    updateQrcStack();
}

bool ResourceEditor::isIcon(const QString &_qrc_path, const QString &file_path) const
{
    const QDir form_dir = m_form->absoluteDir();
    const QString qrc_path = form_dir.relativeFilePath(_qrc_path);

    for (int i = 0; i < m_qrc_stack->count(); ++i) {
        ResourceModel *resourceModel = model(i);
        if (qrc_path == form_dir.relativeFilePath(resourceModel->fileName())) {
            const QModelIndex index = resourceModel->getIndex(file_path);
            const QIcon icon = qVariantValue<QIcon>(resourceModel->data(index, Qt::DecorationRole));
            return !icon.isNull();
        }
    }
    return false;
}

void ResourceEditor::insertEmptyComboItem()
{
    if (m_qrc_combo->count() == 0)
        return;
    const QVariant v = m_qrc_combo->itemData(0);
    if (v.type() == QVariant::Int && v.toInt() == COMBO_EMPTY_DATA)
        return;