QmlDesigner: Implement material bundle frontend

Fixes: QDS-7500
Change-Id: I60c512bb7664d13160f8c58ce063e1e87b6875ee
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

src/plugins/qmldesigner/components/materialbrowser/materialbrowserbundlemodel.cpp

@@ -0,0 +1,219 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "materialbrowserbundlemodel.h"
+
+#include "bundleimporter.h"
+#include "bundlematerial.h"
+#include "bundlematerialcategory.h"
+#include "utils/qtcassert.h"
+
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QUrl>
+
+namespace QmlDesigner {
+
+MaterialBrowserBundleModel::MaterialBrowserBundleModel(QObject *parent)
+    : QAbstractListModel(parent)
+{
+    loadMaterialBundle();
+}
+
+int MaterialBrowserBundleModel::rowCount(const QModelIndex &) const
+{
+    return m_bundleCategories.size();
+}
+
+QVariant MaterialBrowserBundleModel::data(const QModelIndex &index, int role) const
+{
+    QTC_ASSERT(index.isValid() && index.row() < m_bundleCategories.count(), return {});
+    QTC_ASSERT(roleNames().contains(role), return {});
+
+    QByteArray roleName = roleNames().value(role);
+    if (roleName == "bundleCategory")
+        return m_bundleCategories.at(index.row())->name();
+
+    if (roleName == "bundleCategoryVisible")
+        return m_bundleCategories.at(index.row())->visible();
+
+    if (roleName == "bundleMaterialsModel")
+        return QVariant::fromValue(m_bundleCategories.at(index.row())->categoryMaterials());
+
+    return {};
+}
+
+bool MaterialBrowserBundleModel::isValidIndex(int idx) const
+{
+    return idx > -1 && idx < rowCount();
+}
+
+QHash<int, QByteArray> MaterialBrowserBundleModel::roleNames() const
+{
+    static const QHash<int, QByteArray> roles {
+        {Qt::UserRole + 1, "bundleCategory"},
+        {Qt::UserRole + 2, "bundleCategoryVisible"},
+        {Qt::UserRole + 3, "bundleMaterialsModel"}
+    };
+    return roles;
+}
+
+void MaterialBrowserBundleModel::loadMaterialBundle()
+{
+    if (m_matBundleExists)
+        return;
+
+    QString bundlePath = qEnvironmentVariable("MATERIAL_BUNDLE_PATH");
+
+    if (bundlePath.isEmpty())
+        return;
+
+    QString matBundlePath = bundlePath + "material_bundle.json";
+
+    if (m_matBundleObj.isEmpty()) {
+        QFile matPropsFile(matBundlePath);
+
+        if (!matPropsFile.open(QIODevice::ReadOnly)) {
+            qWarning("Couldn't open material_bundle.json");
+            return;
+        }
+
+        QJsonDocument matBundleJsonDoc = QJsonDocument::fromJson(matPropsFile.readAll());
+        if (matBundleJsonDoc.isNull()) {
+            qWarning("Invalid material_bundle.json file");
+            return;
+        } else {
+            m_matBundleObj = matBundleJsonDoc.object();
+        }
+    }
+
+    m_matBundleExists = true;
+
+    const QJsonObject catsObj = m_matBundleObj.value("categories").toObject();
+    const QStringList categories = catsObj.keys();
+    for (const QString &cat : categories) {
+        auto category = new BundleMaterialCategory(this, cat);
+
+        const QJsonObject matsObj = catsObj.value(cat).toObject();
+        const QStringList mats = matsObj.keys();
+        for (const QString &mat : mats) {
+            const QJsonObject matObj = matsObj.value(mat).toObject();
+
+            QStringList files;
+            const QJsonArray assetsArr = matObj.value("files").toArray();
+            for (const QJsonValueRef &asset : assetsArr)
+                files.append(asset.toString());
+
+            auto bundleMat = new BundleMaterial(category, mat, matObj.value("qml").toString(),
+                                                QUrl::fromLocalFile(bundlePath + matObj.value("icon").toString()), files);
+
+            category->addBundleMaterial(bundleMat);
+        }
+        m_bundleCategories.append(category);
+    }
+
+    QStringList sharedFiles;
+    const QJsonArray sharedFilesArr = m_matBundleObj.value("sharedFiles").toArray();
+    for (const QJsonValueRef &file : sharedFilesArr)
+        sharedFiles.append(file.toString());
+
+    m_importer = new Internal::BundleImporter(bundlePath, "MaterialBundle", sharedFiles);
+    connect(m_importer, &Internal::BundleImporter::importFinished, this, [&](const QmlDesigner::NodeMetaInfo &metaInfo) {
+        if (metaInfo.isValid())
+            emit addBundleMaterialToProjectRequested(metaInfo);
+    });
+}
+
+bool MaterialBrowserBundleModel::hasQuick3DImport() const
+{
+    return m_hasQuick3DImport;
+}
+
+void MaterialBrowserBundleModel::setHasQuick3DImport(bool b)
+{
+    if (b == m_hasQuick3DImport)
+        return;
+
+    m_hasQuick3DImport = b;
+    emit hasQuick3DImportChanged();
+}
+
+bool MaterialBrowserBundleModel::hasMaterialRoot() const
+{
+    return m_hasMaterialRoot;
+}
+
+void MaterialBrowserBundleModel::setHasMaterialRoot(bool b)
+{
+    if (m_hasMaterialRoot == b)
+        return;
+
+    m_hasMaterialRoot = b;
+    emit hasMaterialRootChanged();
+}
+
+void MaterialBrowserBundleModel::setSearchText(const QString &searchText)
+{
+    QString lowerSearchText = searchText.toLower();
+
+    if (m_searchText == lowerSearchText)
+        return;
+
+    m_searchText = lowerSearchText;
+
+    bool anyCatVisible = false;
+    bool catVisibilityChanged = false;
+
+    for (BundleMaterialCategory *cat : std::as_const(m_bundleCategories)) {
+        catVisibilityChanged |= cat->filter(m_searchText);
+        anyCatVisible |= cat->visible();
+    }
+
+    if (anyCatVisible == m_isEmpty) {
+        m_isEmpty = !anyCatVisible;
+        emit isEmptyChanged();
+    }
+
+    if (catVisibilityChanged)
+        resetModel();
+}
+
+void MaterialBrowserBundleModel::resetModel()
+{
+    beginResetModel();
+    endResetModel();
+}
+
+void MaterialBrowserBundleModel::applyToSelected(BundleMaterial *mat, bool add)
+{
+    emit applyToSelectedTriggered(mat, add);
+}
+
+void MaterialBrowserBundleModel::addMaterial(BundleMaterial *mat)
+{
+    m_importer->importComponent(mat->qml(), mat->files());
+}
+
+} // namespace QmlDesigner