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/usr/share/peruse/qml/Bookshelf.qml is in peruse-common 1.2+dfsg-2ubuntu1.

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/*
 * Copyright (C) 2015 Dan Leinir Turthra Jensen <admin@leinir.dk>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) version 3, or any
 * later version accepted by the membership of KDE e.V. (or its
 * successor approved by the membership of KDE e.V.), which shall
 * act as a proxy defined in Section 6 of version 3 of the license.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

import QtQuick 2.2
import QtQuick.Layouts 1.1
import QtQuick.Controls 1.4 as QtControls

import org.kde.kirigami 1.0 as Kirigami

import org.kde.peruse 0.1 as Peruse

import "listcomponents" as ListComponents

Kirigami.Page {
    id: root;
    title: headerText;
    property string categoryName: "bookshelf";
    objectName: "bookshelf";
    property alias model: shelfList.model;
    property string sectionRole: "title";
    property int sectionCriteria: ViewSection.FirstCharacter;
    signal bookSelected(string filename, int currentPage);
    property string headerText;

    function openBook(index) {
        mainWindow.contextDrawer.close();
        if(shelfList.model.indexIsBook(index)) {
            var book = shelfList.model.get(index);
            root.bookSelected(book.readProperty("filename"), book.readProperty("currentPage"));
        }
        else {
            var catEntry = shelfList.model.getEntry(index);
            mainWindow.pageStack.push(bookshelf, { focus: true, headerText: catEntry.readProperty("title"), model: catEntry.readProperty("entriesModel") });
        }
    }

    function closeShelf() {
        mainWindow.contextDrawer.close();
        mainWindow.pageStack.pop();
    }
    property list<QtObject> mobileActions;
    property list<QtObject> desktopActions: [
        Kirigami.Action {
            text: i18nc("Navigate one page back", "Back");
            shortcut: bookDetails.opened ? "" : "Esc";
            iconName: "dialog-close";
            onTriggered: closeShelf();
            enabled: mainWindow.pageStack.currentItem == root && mainWindow.deviceType === mainWindow.deviceTypeDesktop && mainWindow.pageStack.currentIndex > 0;
        },
        Kirigami.Action {
            text: i18nc("Select the previous book in the list", "Select previous book");
            shortcut: StandardKey.MoveToPreviousChar
            iconName: "go-previous";
            onTriggered: shelfList.previousEntry();
            enabled: mainWindow.pageStack.currentItem == root && mainWindow.deviceType === mainWindow.deviceTypeDesktop;
        },
        Kirigami.Action {
            text: i18nc("Select the next book in the list", "Select next book");
            shortcut: StandardKey.MoveToNextChar;
            iconName: "go-next";
            onTriggered: shelfList.nextEntry();
            enabled: mainWindow.pageStack.currentItem == root && mainWindow.deviceType === mainWindow.deviceTypeDesktop;
        },
        Kirigami.Action {
            text: i18nc("Open the book which is currently selected in the list", "Open selected book");
            shortcut: "Return";
            iconName: "document-open";
            onTriggered: openBook(shelfList.currentIndex);
            enabled: mainWindow.pageStack.currentItem == root && mainWindow.deviceType === mainWindow.deviceTypeDesktop;
        }
    ]
    actions {
        contextualActions: PLASMA_PLATFORM.substring(0, 5) === "phone" ? mobileActions : desktopActions;
        main: bookDetails.opened ? bookDetailsAction : mainShelfAction;
    }
    Kirigami.Action {
        id: mainShelfAction;
        text: i18nc("search in the list of books (not inside the books)", "Search Books");
        iconName: "system-search";
        onTriggered: searchBox.activate();
        enabled: mainWindow.pageStack.currentItem == root;
    }
    Kirigami.Action {
        id: bookDetailsAction;
        text: i18n("Closes the book details drawer", "Close");
        shortcut: bookDetails.opened ? "Esc" : "";
        iconName: "dialog-cancel";
        onTriggered: bookDetails.close();
        enabled: mainWindow.pageStack.currentItem == root;
    }

    Item {
        width: root.width - (root.leftPadding + root.rightPadding);
        height: root.height - root.topPadding;
        SearchBox {
            id: searchBox;
            anchors {
                top: parent.top;
                left: parent.left;
                right: parent.right;
            }
            maxHeight: parent.height;
            model: root.model;
            onBookSelected: root.bookSelected(filename, currentPage);
        }

        GridView {
            id: shelfList;
            clip: true;
            anchors {
                top: searchBox.bottom;
                left: parent.left;
                right: parent.right;
            }
            height: parent.height;
            footer: Item { width: parent.width; height: Kirigami.Units.iconSizes.large + Kirigami.Units.largeSpacing; }
            cellWidth: width / 2;
            cellHeight: root.height * 2 / 7;
//             header: ListComponents.ListPageHeader { text: root.headerText; }
            currentIndex: -1;

            function previousEntry() {
                if(currentIndex > 0) {
                    currentIndex--;
                }
            }
            function nextEntry() {
                if(currentIndex < model.rowCount() - 1) {
                    currentIndex++;
                }
            }
            delegate: Item {
                height: model.categoryEntriesCount === 0 ? bookTile.neededHeight : categoryTile.neededHeight;
                width: root.width / 2;
                ListComponents.CategoryTileTall {
                    id: categoryTile;
                    height: model.categoryEntriesCount > 0 ? neededHeight : 0;
                    width: parent.width;
                    count: model.categoryEntriesCount;
                    title: model.title;
                    entriesModel: model.categoryEntriesModel ? model.categoryEntriesModel : null;
                    selected: shelfList.currentIndex === index;
                }
                ListComponents.BookTileTall {
                    id: bookTile;
                    height: model.categoryEntriesCount < 1 ? neededHeight : 0;
                    width: parent.width;
                    author: model.author ? model.author : i18nc("used for the author data in book lists if autor is empty", "(unknown)");
                    title: model.title;
                    filename: model.filename;
                    thumbnail: model.categoryEntriesCount < 1 ? model.thumbnail : "";
                    categoryEntriesCount: model.categoryEntriesCount;
                    currentPage: model.currentPage;
                    totalPages: model.totalPages;
                    onBookSelected: root.bookSelected(filename, currentPage);
                    selected: shelfList.currentIndex === index;
                    onPressAndHold: bookDetails.showBookInfo(model.index);
                }
            }
        }
    }
    Kirigami.OverlaySheet {
        id: bookDetails;
        function showBookInfo(index) {
            currentBook = root.model.getEntry(index);
            open();
        }
        property QtObject currentBook: fakeBook;
        property QtObject fakeBook: Peruse.PropertyContainer {
            property string author: "";
            property string title: "";
            property string filename: "";
            property string publisher: "";
            property string thumbnail: "";
            property string currentPage: "0";
            property string totalPages: "0";
        }
        ListComponents.BookTile {
            id: detailsTile;
            height: neededHeight;
            width: shelfList.width - Kirigami.Units.largeSpacing * 2;
            author: bookDetails.currentBook.readProperty("author");
            publisher: bookDetails.currentBook.readProperty("publisher");
            title: bookDetails.currentBook.readProperty("title");
            filename: bookDetails.currentBook.readProperty("filename");
            thumbnail: bookDetails.currentBook.readProperty("thumbnail");
            categoryEntriesCount: 0;
            currentPage: bookDetails.currentBook.readProperty("currentPage");
            totalPages: bookDetails.currentBook.readProperty("totalPages");
            onBookSelected: {
                bookDetails.close();
                applicationWindow().showBook(filename, currentPage);
            }
            onBookDeleteRequested: {
                contentList.removeBook(detailsTile.filename, true);
                close();
            }
        }
    }
}