105 lines
3.2 KiB
Java
105 lines
3.2 KiB
Java
/* Copyright (c) 2019-2021, Arm Limited and Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 the "License";
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.khronos.vulkan_samples;
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import androidx.annotation.NonNull;
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import androidx.fragment.app.Fragment;
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import androidx.fragment.app.FragmentManager;
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import androidx.fragment.app.FragmentStatePagerAdapter;
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import android.view.ViewGroup;
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import android.widget.AdapterView;
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import com.khronos.vulkan_samples.model.Sample;
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import com.khronos.vulkan_samples.model.SampleStore;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Objects;
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public class ViewPagerAdapter extends FragmentStatePagerAdapter {
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private TabFragment currentFragment;
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private List<Sample> viewableSamples = new ArrayList<>();
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private final SampleStore samples;
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private final AdapterView.OnItemClickListener clickListener;
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public ViewPagerAdapter(FragmentManager manager, SampleStore samples, AdapterView.OnItemClickListener clickListener) {
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super(manager);
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this.samples = samples;
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this.clickListener = clickListener;
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applyFilter(samples.getTags());
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}
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public void setDialog(FilterDialog dialog) {
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dialog.setup(this, samples.getTags());
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}
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/**
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* Modifies the filter so that the viewableSamples updates
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*/
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public void applyFilter(List<String> filterTags) {
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viewableSamples = new ArrayList<>(samples.getByTags(filterTags));
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}
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@NonNull
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@Override
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public Fragment getItem(int position) {
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List<Sample> fragmentSamples = new ArrayList<>();
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String category = samples.getCategories().get(position);
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assert category != null;
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for (Sample sample : Objects.requireNonNull(samples.getByCategory(category))) {
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for (Sample viewableSample : this.viewableSamples) {
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if (sample.equals(viewableSample)) {
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fragmentSamples.add(sample);
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}
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}
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}
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return TabFragment.getInstance(category, fragmentSamples, clickListener);
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}
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public int getItemPosition(@NonNull Object object) {
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return POSITION_NONE;
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}
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@Override
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public void setPrimaryItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
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if (getCurrentFragment() != object) {
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currentFragment = (TabFragment) object;
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}
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super.setPrimaryItem(container, position, object);
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}
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@Override
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public int getCount() {
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return samples.getCategoryIndex().size();
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}
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@Override
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public CharSequence getPageTitle(int position) {
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return samples.getCategories().get(position);
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}
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TabFragment getCurrentFragment() {
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return currentFragment;
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}
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} |