mirror of
https://github.com/JakubMelka/PDF4QT.git
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132 lines
4.2 KiB
C++
132 lines
4.2 KiB
C++
// Copyright (C) 2019 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFITEMMODELS_H
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#define PDFITEMMODELS_H
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#include "pdfglobal.h"
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#include "pdfobject.h"
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#include <QAbstractItemModel>
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namespace pdf
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{
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class PDFDocument;
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class PDFOptionalContentActivity;
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/// Represents tree item in the GUI tree
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class PDFTreeItem
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{
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public:
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inline explicit PDFTreeItem() = default;
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inline explicit PDFTreeItem(PDFTreeItem* parent) : m_parent(parent) { }
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virtual ~PDFTreeItem();
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template<typename T, typename... Arguments>
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inline T* addChild(Arguments&&... arguments)
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{
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T* item = new T(this, std::forward(arguments)...);
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m_children.push_back(item);
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return item;
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}
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void addCreatedChild(PDFTreeItem* item)
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{
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item->m_parent = this;
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m_children.push_back(item);
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}
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int getRow() const { return m_parent->m_children.indexOf(const_cast<PDFTreeItem*>(this)); }
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int getChildCount() const { return m_children.size(); }
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const PDFTreeItem* getChild(int index) const { return m_children.at(index); }
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const PDFTreeItem* getParent() const { return m_parent; }
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private:
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PDFTreeItem* m_parent = nullptr;
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QList<PDFTreeItem*> m_children;
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};
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/// Root of all tree item models
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class PDFFORQTLIBSHARED_EXPORT PDFTreeItemModel : public QAbstractItemModel
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{
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public:
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explicit PDFTreeItemModel(QObject* parent);
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void setDocument(const pdf::PDFDocument* document);
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bool isEmpty() const;
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virtual QModelIndex index(int row, int column, const QModelIndex& parent) const override;
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virtual QModelIndex parent(const QModelIndex& child) const override;
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virtual int rowCount(const QModelIndex& parent) const override;
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virtual bool hasChildren(const QModelIndex& parent) const override;
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virtual Qt::ItemFlags flags(const QModelIndex& index) const override;
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virtual void update() = 0;
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protected:
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const PDFDocument* m_document;
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std::unique_ptr<PDFTreeItem> m_rootItem;
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};
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class PDFOptionalContentTreeItem : public PDFTreeItem
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{
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public:
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inline explicit PDFOptionalContentTreeItem(PDFOptionalContentTreeItem* parent, PDFObjectReference reference, QString text, bool locked) :
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PDFTreeItem(parent),
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m_reference(reference),
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m_text(qMove(text)),
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m_locked(locked)
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{
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}
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PDFObjectReference getReference() const { return m_reference; }
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QString getText() const;
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bool isLocked() const { return m_locked; }
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private:
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PDFObjectReference m_reference; ///< Reference to optional content group
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QString m_text; ///< Node display name
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bool m_locked; ///< Node is locked (user can't change it)
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};
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class PDFFORQTLIBSHARED_EXPORT PDFOptionalContentTreeItemModel : public PDFTreeItemModel
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{
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public:
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inline explicit PDFOptionalContentTreeItemModel(QObject* parent) :
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PDFTreeItemModel(parent),
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m_activity(nullptr)
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{
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}
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void setActivity(PDFOptionalContentActivity* activity);
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virtual int columnCount(const QModelIndex& parent) const override;
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virtual QVariant data(const QModelIndex& index, int role) const override;
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virtual void update() override;
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virtual Qt::ItemFlags flags(const QModelIndex& index) const override;
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virtual bool setData(const QModelIndex& index, const QVariant& value, int role) override;
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private:
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PDFOptionalContentActivity* m_activity;
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};
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} // namespace pdf
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#endif // PDFITEMMODELS_H
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