Custom New Page Template

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/*
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 *   Copyright © 2018-2026 PSPDFKit GmbH. All rights reserved.
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 *
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 *   The PSPDFKit Sample applications are licensed with a modified BSD license.
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 *   Please see License for details. This notice may not be removed from this file.
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 */
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package com.pspdfkit.catalog.examples.java;
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import static com.pspdfkit.catalog.tasks.ExtractAssetTask.extract;
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import android.content.Context;
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import android.content.Intent;
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import android.net.Uri;
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import android.os.Bundle;
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import androidx.annotation.NonNull;
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import androidx.core.content.ContextCompat;
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import com.pspdfkit.catalog.R;
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import com.pspdfkit.catalog.SdkExample;
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import com.pspdfkit.configuration.activity.PdfActivityConfiguration;
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import com.pspdfkit.document.DocumentSource;
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import com.pspdfkit.document.PdfDocumentLoader;
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import com.pspdfkit.document.editor.page.DialogNewPageFactory;
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import com.pspdfkit.document.editor.page.NewPageDialog;
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import com.pspdfkit.document.editor.page.PageTemplate;
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import com.pspdfkit.document.providers.AssetDataProvider;
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import com.pspdfkit.ui.PdfActivity;
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import com.pspdfkit.ui.PdfActivityIntentBuilder;
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import com.pspdfkit.ui.PdfThumbnailGrid;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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public class CustomPageTemplatesExample extends SdkExample {
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    public CustomPageTemplatesExample(Context context) {
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        super(context, R.string.customPageTemplateExampleTitle, R.string.customPageTemplateExampleDescription);
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    }
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    @Override
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    public void launchExample(
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            @NonNull final Context context, @NonNull final PdfActivityConfiguration.Builder configuration) {
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        // Extract the document from the assets.
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        extract(ANNOTATIONS_EXAMPLE, getTitle(), context, documentFile -> {
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            // To start the example create a launch intent using the builder.
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            final Intent intent = PdfActivityIntentBuilder.fromUri(context, Uri.fromFile(documentFile))
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                    .configuration(configuration.build())
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                    .activityClass(CustomPageTemplateActivity.class)
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                    .build();
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            context.startActivity(intent);
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        });
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    }
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    public static class CustomPageTemplateActivity extends PdfActivity {
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        /** The additional page templates we want to add. */
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        private List<PageTemplate> pageTemplates;
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        @Override
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        protected void onCreate(Bundle savedInstanceState) {
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            super.onCreate(savedInstanceState);
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            pageTemplates = new ArrayList<>();
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            // Document template.
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            try {
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                pageTemplates.add(new PageTemplate(
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                        PdfDocumentLoader.openDocument(
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                                this, new DocumentSource(new AssetDataProvider(SdkExample.WELCOME_DOC))),
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                        8,
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                        // The image should be 100x100dp.
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                        getString(R.string.page_template_title),
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                        ContextCompat.getDrawable(this, R.drawable.page_template_preview)));
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            } catch (IOException e) {
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                throw new IllegalStateException("Couldn't open '" + SdkExample.WELCOME_DOC + "' file.", e);
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            }
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            PdfThumbnailGrid thumbnailGrid = getPSPDFKitViews().getThumbnailGridView();
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            // Set a DialogNewPageFactory that knows about our custom page templates.
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            thumbnailGrid.setNewPageFactory(new DialogNewPageFactory(getSupportFragmentManager(), null, pageTemplates));
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            // If we displayed the dialog before restore it with our page templates.
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            NewPageDialog.restore(
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                    getSupportFragmentManager(), pageTemplates, thumbnailGrid.getDefaultNewPageDialogCallback());
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        }
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    }
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}