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@@ -0,0 +1,787 @@
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+
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+/*
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+ * Copyright (C) 2013 The Android Open Source Project
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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 third_parties.in.srain.cube;
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+
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+
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+ import android.annotation.TargetApi;
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+ import android.content.Context;
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+ import android.database.DataSetObservable;
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+ import android.database.DataSetObserver;
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+ import android.os.Build;
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+ import android.util.AttributeSet;
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+ import android.util.Log;
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+ import android.view.View;
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+ import android.view.ViewGroup;
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+ import android.widget.*;
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+
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+ import java.lang.reflect.Field;
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+ import java.util.ArrayList;
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+
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+/**
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+ * A {@link GridView} that supports adding header rows in a
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+ * very similar way to {@link android.widget.ListView}.
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+ * See {@link GridViewWithHeaderAndFooter#addHeaderView(View, Object, boolean)}
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+ * See {@link GridViewWithHeaderAndFooter#addFooterView(View, Object, boolean)}
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+ */
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+public class GridViewWithHeaderAndFooter extends GridView {
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+
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+ public static boolean DEBUG = false;
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+
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+ /**
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+ * A class that represents a fixed view in a list, for example a header at the top
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+ * or a footer at the bottom.
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+ */
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+ private static class FixedViewInfo {
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+ /**
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+ * The view to add to the grid
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+ */
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+ public View view;
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+ public ViewGroup viewContainer;
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+ /**
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+ * The data backing the view. This is returned from {@link ListAdapter#getItem(int)}.
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+ */
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+ public Object data;
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+ /**
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+ * <code>true</code> if the fixed view should be selectable in the grid
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+ */
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+ public boolean isSelectable;
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+ }
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+
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+ private int mNumColumns = AUTO_FIT;
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+ private View mViewForMeasureRowHeight = null;
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+ private int mRowHeight = -1;
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+ private static final String LOG_TAG = "grid-view-with-header-and-footer";
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+
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+ private ArrayList<FixedViewInfo> mHeaderViewInfos = new ArrayList<FixedViewInfo>();
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+ private ArrayList<FixedViewInfo> mFooterViewInfos = new ArrayList<FixedViewInfo>();
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+
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+ private void initHeaderGridView() {
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+ }
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+
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+ public GridViewWithHeaderAndFooter(Context context) {
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+ super(context);
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+ initHeaderGridView();
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+ }
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+
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+ public GridViewWithHeaderAndFooter(Context context, AttributeSet attrs) {
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+ super(context, attrs);
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+ initHeaderGridView();
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+ }
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+
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+ public GridViewWithHeaderAndFooter(Context context, AttributeSet attrs, int defStyle) {
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+ super(context, attrs, defStyle);
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+ initHeaderGridView();
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+ }
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+
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+ @Override
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+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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+ super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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+ ListAdapter adapter = getAdapter();
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+ if (adapter != null && adapter instanceof HeaderViewGridAdapter) {
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+ ((HeaderViewGridAdapter) adapter).setNumColumns(getNumColumnsCompatible());
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+ ((HeaderViewGridAdapter) adapter).setRowHeight(getRowHeight());
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+ }
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+ }
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+
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+ @Override
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+ public void setClipChildren(boolean clipChildren) {
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+ // Ignore, since the header rows depend on not being clipped
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+ }
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+
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+ /**
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+ * Do not call this method unless you know how it works.
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+ *
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+ * @param clipChildren
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+ */
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+ public void setClipChildrenSupper(boolean clipChildren) {
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+ super.setClipChildren(false);
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+ }
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+
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+ /**
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+ * Add a fixed view to appear at the top of the grid. If addHeaderView is
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+ * called more than once, the views will appear in the order they were
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+ * added. Views added using this call can take focus if they want.
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+ * <p/>
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+ * NOTE: Call this before calling setAdapter. This is so HeaderGridView can wrap
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+ * the supplied cursor with one that will also account for header views.
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+ *
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+ * @param v The view to add.
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+ */
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+ public void addHeaderView(View v) {
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+ addHeaderView(v, null, true);
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+ }
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+
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+ /**
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+ * Add a fixed view to appear at the top of the grid. If addHeaderView is
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+ * called more than once, the views will appear in the order they were
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+ * added. Views added using this call can take focus if they want.
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+ * <p/>
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+ * NOTE: Call this before calling setAdapter. This is so HeaderGridView can wrap
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+ * the supplied cursor with one that will also account for header views.
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+ *
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+ * @param v The view to add.
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+ * @param data Data to associate with this view
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+ * @param isSelectable whether the item is selectable
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+ */
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+ public void addHeaderView(View v, Object data, boolean isSelectable) {
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+ ListAdapter adapter = getAdapter();
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+ if (adapter != null && !(adapter instanceof HeaderViewGridAdapter)) {
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+ throw new IllegalStateException(
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+ "Cannot add header view to grid -- setAdapter has already been called.");
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+ }
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+
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+ ViewGroup.LayoutParams lyp = v.getLayoutParams();
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+
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+ FixedViewInfo info = new FixedViewInfo();
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+ FrameLayout fl = new FullWidthFixedViewLayout(getContext());
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+
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+ if (lyp != null) {
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+ v.setLayoutParams(new FrameLayout.LayoutParams(lyp.width, lyp.height));
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+ fl.setLayoutParams(new AbsListView.LayoutParams(lyp.width, lyp.height));
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+ }
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+ fl.addView(v);
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+ info.view = v;
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+ info.viewContainer = fl;
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+ info.data = data;
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+ info.isSelectable = isSelectable;
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+ mHeaderViewInfos.add(info);
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+ // in the case of re-adding a header view, or adding one later on,
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+ // we need to notify the observer
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+ if (adapter != null) {
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+ ((HeaderViewGridAdapter) adapter).notifyDataSetChanged();
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+ }
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+ }
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+
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+ public void addFooterView(View v) {
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+ addFooterView(v, null, true);
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+ }
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+
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+ public void addFooterView(View v, Object data, boolean isSelectable) {
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+ ListAdapter mAdapter = getAdapter();
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+ if (mAdapter != null && !(mAdapter instanceof HeaderViewGridAdapter)) {
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+ throw new IllegalStateException(
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+ "Cannot add header view to grid -- setAdapter has already been called.");
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+ }
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+
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+ ViewGroup.LayoutParams lyp = v.getLayoutParams();
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+
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+ FixedViewInfo info = new FixedViewInfo();
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+ FrameLayout fl = new FullWidthFixedViewLayout(getContext());
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+
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+ if (lyp != null) {
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+ v.setLayoutParams(new FrameLayout.LayoutParams(lyp.width, lyp.height));
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+ fl.setLayoutParams(new AbsListView.LayoutParams(lyp.width, lyp.height));
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+ }
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+ fl.addView(v);
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+ info.view = v;
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+ info.viewContainer = fl;
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+ info.data = data;
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+ info.isSelectable = isSelectable;
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+ mFooterViewInfos.add(info);
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+
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+ if (mAdapter != null) {
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+ ((HeaderViewGridAdapter) mAdapter).notifyDataSetChanged();
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+ }
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+ }
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+
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+ public int getHeaderViewCount() {
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+ return mHeaderViewInfos.size();
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+ }
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+
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+ public int getFooterViewCount() {
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+ return mFooterViewInfos.size();
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+ }
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+
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+ /**
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+ * Removes a previously-added header view.
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+ *
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+ * @param v The view to remove
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+ * @return true if the view was removed, false if the view was not a header
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+ * view
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+ */
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+ public boolean removeHeaderView(View v) {
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+ if (mHeaderViewInfos.size() > 0) {
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+ boolean result = false;
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+ ListAdapter adapter = getAdapter();
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+ if (adapter != null && ((HeaderViewGridAdapter) adapter).removeHeader(v)) {
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+ result = true;
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+ }
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+ removeFixedViewInfo(v, mHeaderViewInfos);
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+ return result;
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+ }
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+ return false;
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+ }
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+
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+ /**
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+ * Removes a previously-added footer view.
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+ *
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+ * @param v The view to remove
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+ * @return true if the view was removed, false if the view was not a header
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+ * view
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+ */
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+ public boolean removeFooterView(View v) {
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+ if (mFooterViewInfos.size() > 0) {
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+ boolean result = false;
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+ ListAdapter adapter = getAdapter();
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+ if (adapter != null && ((HeaderViewGridAdapter) adapter).removeFooter(v)) {
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+ result = true;
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+ }
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+ removeFixedViewInfo(v, mFooterViewInfos);
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+ return result;
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+ }
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+ return false;
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+ }
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+
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+ private void removeFixedViewInfo(View v, ArrayList<FixedViewInfo> where) {
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+ int len = where.size();
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+ for (int i = 0; i < len; ++i) {
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+ FixedViewInfo info = where.get(i);
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+ if (info.view == v) {
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+ where.remove(i);
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+ break;
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+ }
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+ }
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+ }
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+
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+ @TargetApi(11)
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+ private int getNumColumnsCompatible() {
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+ if (Build.VERSION.SDK_INT >= 11) {
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+ return super.getNumColumns();
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+ } else {
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+ try {
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+ Field numColumns = getClass().getSuperclass().getDeclaredField("mNumColumns");
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+ numColumns.setAccessible(true);
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+ return numColumns.getInt(this);
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+ } catch (Exception e) {
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+ if (mNumColumns != -1) {
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+ return mNumColumns;
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+ }
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+ throw new RuntimeException("Can not determine the mNumColumns for this API platform, please call setNumColumns to set it.");
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+ }
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+ }
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+ }
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+
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+ @TargetApi(16)
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+ private int getColumnWidthCompatible() {
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+ if (Build.VERSION.SDK_INT >= 16) {
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+ return super.getColumnWidth();
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+ } else {
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+ try {
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+ Field numColumns = getClass().getSuperclass().getDeclaredField("mColumnWidth");
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+ numColumns.setAccessible(true);
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+ return numColumns.getInt(this);
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+ } catch (NoSuchFieldException e) {
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+ throw new RuntimeException(e);
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+ } catch (IllegalAccessException e) {
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+ throw new RuntimeException(e);
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+ }
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+ }
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+ }
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+
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+ @Override
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+ protected void onDetachedFromWindow() {
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+ super.onDetachedFromWindow();
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+ mViewForMeasureRowHeight = null;
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+ }
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+
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+ public void invalidateRowHeight() {
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+ mRowHeight = -1;
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+ }
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+
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+ public int getRowHeight() {
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+ if (mRowHeight > 0) {
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+ return mRowHeight;
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+ }
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+ ListAdapter adapter = getAdapter();
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+ int numColumns = getNumColumnsCompatible();
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+
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+ // adapter has not been set or has no views in it;
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+ if (adapter == null || adapter.getCount() <= numColumns * (mHeaderViewInfos.size() + mFooterViewInfos.size())) {
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+ return -1;
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+ }
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+ int mColumnWidth = getColumnWidthCompatible();
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+ View view = getAdapter().getView(numColumns * mHeaderViewInfos.size(), mViewForMeasureRowHeight, this);
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+ AbsListView.LayoutParams p = (AbsListView.LayoutParams) view.getLayoutParams();
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+ if (p == null) {
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+ p = new AbsListView.LayoutParams(-1, -2, 0);
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+ view.setLayoutParams(p);
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+ }
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+ int childHeightSpec = getChildMeasureSpec(
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+ MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 0, p.height);
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+ int childWidthSpec = getChildMeasureSpec(
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+ MeasureSpec.makeMeasureSpec(mColumnWidth, MeasureSpec.EXACTLY), 0, p.width);
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+ view.measure(childWidthSpec, childHeightSpec);
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+ mViewForMeasureRowHeight = view;
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+ mRowHeight = view.getMeasuredHeight();
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+ return mRowHeight;
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+ }
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+
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+ @TargetApi(11)
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+ public void tryToScrollToBottomSmoothly() {
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+ int lastPos = getAdapter().getCount() - 1;
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+ if (Build.VERSION.SDK_INT >= 11) {
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+ smoothScrollToPositionFromTop(lastPos, 0);
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+ } else {
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+ setSelection(lastPos);
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+ }
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+ }
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+
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+ @TargetApi(11)
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+ public void tryToScrollToBottomSmoothly(int duration) {
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+ int lastPos = getAdapter().getCount() - 1;
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+ if (Build.VERSION.SDK_INT >= 11) {
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+ smoothScrollToPositionFromTop(lastPos, 0, duration);
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+ } else {
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+ setSelection(lastPos);
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+ }
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+ }
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+
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+ @Override
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+ public void setAdapter(ListAdapter adapter) {
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+ if (mHeaderViewInfos.size() > 0 || mFooterViewInfos.size() > 0) {
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+ HeaderViewGridAdapter headerViewGridAdapter = new HeaderViewGridAdapter(mHeaderViewInfos, mFooterViewInfos, adapter);
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+ int numColumns = getNumColumnsCompatible();
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+ if (numColumns > 1) {
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+ headerViewGridAdapter.setNumColumns(numColumns);
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+ }
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+ headerViewGridAdapter.setRowHeight(getRowHeight());
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+ super.setAdapter(headerViewGridAdapter);
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+ } else {
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+ super.setAdapter(adapter);
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+ }
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+ }
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+
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+ /**
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+ * full width
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+ */
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+ private class FullWidthFixedViewLayout extends FrameLayout {
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+
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+ public FullWidthFixedViewLayout(Context context) {
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+ super(context);
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+ }
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+
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+ @Override
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+ protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
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+ int realLeft = GridViewWithHeaderAndFooter.this.getPaddingLeft() + getPaddingLeft();
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+ // Try to make where it should be, from left, full width
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+ if (realLeft != left) {
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+ offsetLeftAndRight(realLeft - left);
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+ }
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+ super.onLayout(changed, left, top, right, bottom);
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+ }
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+
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+ @Override
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+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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+ int targetWidth = GridViewWithHeaderAndFooter.this.getMeasuredWidth()
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+ - GridViewWithHeaderAndFooter.this.getPaddingLeft()
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+ - GridViewWithHeaderAndFooter.this.getPaddingRight();
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+ widthMeasureSpec = MeasureSpec.makeMeasureSpec(targetWidth,
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+ MeasureSpec.getMode(widthMeasureSpec));
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+ super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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+ }
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+ }
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+
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+ @Override
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+ public void setNumColumns(int numColumns) {
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+ super.setNumColumns(numColumns);
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+ mNumColumns = numColumns;
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+ ListAdapter adapter = getAdapter();
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+ if (adapter != null && adapter instanceof HeaderViewGridAdapter) {
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+ ((HeaderViewGridAdapter) adapter).setNumColumns(numColumns);
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+ }
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+ }
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+
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+ /**
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+ * ListAdapter used when a HeaderGridView has header views. This ListAdapter
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+ * wraps another one and also keeps track of the header views and their
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+ * associated data objects.
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+ * <p>This is intended as a base class; you will probably not need to
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+ * use this class directly in your own code.
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+ */
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+ private static class HeaderViewGridAdapter implements WrapperListAdapter, Filterable {
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+ // This is used to notify the container of updates relating to number of columns
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+ // or headers changing, which changes the number of placeholders needed
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|
+ private final DataSetObservable mDataSetObservable = new DataSetObservable();
|
|
|
+ private final ListAdapter mAdapter;
|
|
|
+ static final ArrayList<FixedViewInfo> EMPTY_INFO_LIST =
|
|
|
+ new ArrayList<FixedViewInfo>();
|
|
|
+
|
|
|
+ // This ArrayList is assumed to NOT be null.
|
|
|
+ ArrayList<FixedViewInfo> mHeaderViewInfos;
|
|
|
+ ArrayList<FixedViewInfo> mFooterViewInfos;
|
|
|
+ private int mNumColumns = 1;
|
|
|
+ private int mRowHeight = -1;
|
|
|
+ boolean mAreAllFixedViewsSelectable;
|
|
|
+ private final boolean mIsFilterable;
|
|
|
+ private boolean mCachePlaceHoldView = true;
|
|
|
+ // From Recycle Bin or calling getView, this a question...
|
|
|
+ private boolean mCacheFirstHeaderView = false;
|
|
|
+
|
|
|
+ public HeaderViewGridAdapter(ArrayList<FixedViewInfo> headerViewInfos, ArrayList<FixedViewInfo> footViewInfos, ListAdapter adapter) {
|
|
|
+ mAdapter = adapter;
|
|
|
+ mIsFilterable = adapter instanceof Filterable;
|
|
|
+ if (headerViewInfos == null) {
|
|
|
+ mHeaderViewInfos = EMPTY_INFO_LIST;
|
|
|
+ } else {
|
|
|
+ mHeaderViewInfos = headerViewInfos;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (footViewInfos == null) {
|
|
|
+ mFooterViewInfos = EMPTY_INFO_LIST;
|
|
|
+ } else {
|
|
|
+ mFooterViewInfos = footViewInfos;
|
|
|
+ }
|
|
|
+ mAreAllFixedViewsSelectable = areAllListInfosSelectable(mHeaderViewInfos)
|
|
|
+ && areAllListInfosSelectable(mFooterViewInfos);
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setNumColumns(int numColumns) {
|
|
|
+ if (numColumns < 1) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if (mNumColumns != numColumns) {
|
|
|
+ mNumColumns = numColumns;
|
|
|
+ notifyDataSetChanged();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ public void setRowHeight(int height) {
|
|
|
+ mRowHeight = height;
|
|
|
+ }
|
|
|
+
|
|
|
+ public int getHeadersCount() {
|
|
|
+ return mHeaderViewInfos.size();
|
|
|
+ }
|
|
|
+
|
|
|
+ public int getFootersCount() {
|
|
|
+ return mFooterViewInfos.size();
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public boolean isEmpty() {
|
|
|
+ return (mAdapter == null || mAdapter.isEmpty()) && getHeadersCount() == 0 && getFootersCount() == 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ private boolean areAllListInfosSelectable(ArrayList<FixedViewInfo> infos) {
|
|
|
+ if (infos != null) {
|
|
|
+ for (FixedViewInfo info : infos) {
|
|
|
+ if (!info.isSelectable) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ public boolean removeHeader(View v) {
|
|
|
+ for (int i = 0; i < mHeaderViewInfos.size(); i++) {
|
|
|
+ FixedViewInfo info = mHeaderViewInfos.get(i);
|
|
|
+ if (info.view == v) {
|
|
|
+ mHeaderViewInfos.remove(i);
|
|
|
+ mAreAllFixedViewsSelectable =
|
|
|
+ areAllListInfosSelectable(mHeaderViewInfos) && areAllListInfosSelectable(mFooterViewInfos);
|
|
|
+ mDataSetObservable.notifyChanged();
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ public boolean removeFooter(View v) {
|
|
|
+ for (int i = 0; i < mFooterViewInfos.size(); i++) {
|
|
|
+ FixedViewInfo info = mFooterViewInfos.get(i);
|
|
|
+ if (info.view == v) {
|
|
|
+ mFooterViewInfos.remove(i);
|
|
|
+ mAreAllFixedViewsSelectable =
|
|
|
+ areAllListInfosSelectable(mHeaderViewInfos) && areAllListInfosSelectable(mFooterViewInfos);
|
|
|
+ mDataSetObservable.notifyChanged();
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public int getCount() {
|
|
|
+ if (mAdapter != null) {
|
|
|
+ return (getFootersCount() + getHeadersCount()) * mNumColumns + getAdapterAndPlaceHolderCount();
|
|
|
+ } else {
|
|
|
+ return (getFootersCount() + getHeadersCount()) * mNumColumns;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public boolean areAllItemsEnabled() {
|
|
|
+ if (mAdapter != null) {
|
|
|
+ return mAreAllFixedViewsSelectable && mAdapter.areAllItemsEnabled();
|
|
|
+ } else {
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ private int getAdapterAndPlaceHolderCount() {
|
|
|
+ final int adapterCount = (int) (Math.ceil(1f * mAdapter.getCount() / mNumColumns) * mNumColumns);
|
|
|
+ return adapterCount;
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public boolean isEnabled(int position) {
|
|
|
+ // Header (negative positions will throw an IndexOutOfBoundsException)
|
|
|
+ int numHeadersAndPlaceholders = getHeadersCount() * mNumColumns;
|
|
|
+ if (position < numHeadersAndPlaceholders) {
|
|
|
+ return position % mNumColumns == 0
|
|
|
+ && mHeaderViewInfos.get(position / mNumColumns).isSelectable;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Adapter
|
|
|
+ final int adjPosition = position - numHeadersAndPlaceholders;
|
|
|
+ int adapterCount = 0;
|
|
|
+ if (mAdapter != null) {
|
|
|
+ adapterCount = getAdapterAndPlaceHolderCount();
|
|
|
+ if (adjPosition < adapterCount) {
|
|
|
+ return adjPosition < mAdapter.getCount() && mAdapter.isEnabled(adjPosition);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Footer (off-limits positions will throw an IndexOutOfBoundsException)
|
|
|
+ final int footerPosition = adjPosition - adapterCount;
|
|
|
+ return footerPosition % mNumColumns == 0
|
|
|
+ && mFooterViewInfos.get(footerPosition / mNumColumns).isSelectable;
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public Object getItem(int position) {
|
|
|
+ // Header (negative positions will throw an ArrayIndexOutOfBoundsException)
|
|
|
+ int numHeadersAndPlaceholders = getHeadersCount() * mNumColumns;
|
|
|
+ if (position < numHeadersAndPlaceholders) {
|
|
|
+ if (position % mNumColumns == 0) {
|
|
|
+ return mHeaderViewInfos.get(position / mNumColumns).data;
|
|
|
+ }
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Adapter
|
|
|
+ final int adjPosition = position - numHeadersAndPlaceholders;
|
|
|
+ int adapterCount = 0;
|
|
|
+ if (mAdapter != null) {
|
|
|
+ adapterCount = getAdapterAndPlaceHolderCount();
|
|
|
+ if (adjPosition < adapterCount) {
|
|
|
+ if (adjPosition < mAdapter.getCount()) {
|
|
|
+ return mAdapter.getItem(adjPosition);
|
|
|
+ } else {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Footer (off-limits positions will throw an IndexOutOfBoundsException)
|
|
|
+ final int footerPosition = adjPosition - adapterCount;
|
|
|
+ if (footerPosition % mNumColumns == 0) {
|
|
|
+ return mFooterViewInfos.get(footerPosition).data;
|
|
|
+ } else {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public long getItemId(int position) {
|
|
|
+ int numHeadersAndPlaceholders = getHeadersCount() * mNumColumns;
|
|
|
+ if (mAdapter != null && position >= numHeadersAndPlaceholders) {
|
|
|
+ int adjPosition = position - numHeadersAndPlaceholders;
|
|
|
+ int adapterCount = mAdapter.getCount();
|
|
|
+ if (adjPosition < adapterCount) {
|
|
|
+ return mAdapter.getItemId(adjPosition);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public boolean hasStableIds() {
|
|
|
+ if (mAdapter != null) {
|
|
|
+ return mAdapter.hasStableIds();
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public View getView(int position, View convertView, ViewGroup parent) {
|
|
|
+ if (DEBUG) {
|
|
|
+ Log.d(LOG_TAG, String.format("getView: %s, reused: %s", position, convertView == null));
|
|
|
+ }
|
|
|
+ // Header (negative positions will throw an ArrayIndexOutOfBoundsException)
|
|
|
+ int numHeadersAndPlaceholders = getHeadersCount() * mNumColumns;
|
|
|
+ if (position < numHeadersAndPlaceholders) {
|
|
|
+ View headerViewContainer = mHeaderViewInfos
|
|
|
+ .get(position / mNumColumns).viewContainer;
|
|
|
+ if (position % mNumColumns == 0) {
|
|
|
+ return headerViewContainer;
|
|
|
+ } else {
|
|
|
+ if (convertView == null) {
|
|
|
+ convertView = new View(parent.getContext());
|
|
|
+ }
|
|
|
+ // We need to do this because GridView uses the height of the last item
|
|
|
+ // in a row to determine the height for the entire row.
|
|
|
+ convertView.setVisibility(View.INVISIBLE);
|
|
|
+ convertView.setMinimumHeight(headerViewContainer.getHeight());
|
|
|
+ return convertView;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // Adapter
|
|
|
+ final int adjPosition = position - numHeadersAndPlaceholders;
|
|
|
+ int adapterCount = 0;
|
|
|
+ if (mAdapter != null) {
|
|
|
+ adapterCount = getAdapterAndPlaceHolderCount();
|
|
|
+ if (adjPosition < adapterCount) {
|
|
|
+ if (adjPosition < mAdapter.getCount()) {
|
|
|
+ View view = mAdapter.getView(adjPosition, convertView, parent);
|
|
|
+ return view;
|
|
|
+ } else {
|
|
|
+ if (convertView == null) {
|
|
|
+ convertView = new View(parent.getContext());
|
|
|
+ }
|
|
|
+ convertView.setVisibility(View.INVISIBLE);
|
|
|
+ convertView.setMinimumHeight(mRowHeight);
|
|
|
+ return convertView;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // Footer
|
|
|
+ final int footerPosition = adjPosition - adapterCount;
|
|
|
+ if (footerPosition < getCount()) {
|
|
|
+ View footViewContainer = mFooterViewInfos
|
|
|
+ .get(footerPosition / mNumColumns).viewContainer;
|
|
|
+ if (position % mNumColumns == 0) {
|
|
|
+ return footViewContainer;
|
|
|
+ } else {
|
|
|
+ if (convertView == null) {
|
|
|
+ convertView = new View(parent.getContext());
|
|
|
+ }
|
|
|
+ // We need to do this because GridView uses the height of the last item
|
|
|
+ // in a row to determine the height for the entire row.
|
|
|
+ convertView.setVisibility(View.INVISIBLE);
|
|
|
+ convertView.setMinimumHeight(footViewContainer.getHeight());
|
|
|
+ return convertView;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ throw new ArrayIndexOutOfBoundsException(position);
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public int getItemViewType(int position) {
|
|
|
+
|
|
|
+ final int numHeadersAndPlaceholders = getHeadersCount() * mNumColumns;
|
|
|
+ final int adapterViewTypeStart = mAdapter == null ? 0 : mAdapter.getViewTypeCount() - 1;
|
|
|
+ int type = AdapterView.ITEM_VIEW_TYPE_HEADER_OR_FOOTER;
|
|
|
+ if (mCachePlaceHoldView) {
|
|
|
+ // Header
|
|
|
+ if (position < numHeadersAndPlaceholders) {
|
|
|
+ if (position == 0) {
|
|
|
+ if (mCacheFirstHeaderView) {
|
|
|
+ type = adapterViewTypeStart + mHeaderViewInfos.size() + mFooterViewInfos.size() + 1 + 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (position % mNumColumns != 0) {
|
|
|
+ type = adapterViewTypeStart + (position / mNumColumns + 1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Adapter
|
|
|
+ final int adjPosition = position - numHeadersAndPlaceholders;
|
|
|
+ int adapterCount = 0;
|
|
|
+ if (mAdapter != null) {
|
|
|
+ adapterCount = getAdapterAndPlaceHolderCount();
|
|
|
+ if (adjPosition >= 0 && adjPosition < adapterCount) {
|
|
|
+ if (adjPosition < mAdapter.getCount()) {
|
|
|
+ type = mAdapter.getItemViewType(adjPosition);
|
|
|
+ } else {
|
|
|
+ if (mCachePlaceHoldView) {
|
|
|
+ type = adapterViewTypeStart + mHeaderViewInfos.size() + 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (mCachePlaceHoldView) {
|
|
|
+ // Footer
|
|
|
+ final int footerPosition = adjPosition - adapterCount;
|
|
|
+ if (footerPosition >= 0 && footerPosition < getCount() && (footerPosition % mNumColumns) != 0) {
|
|
|
+ type = adapterViewTypeStart + mHeaderViewInfos.size() + 1 + (footerPosition / mNumColumns + 1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (DEBUG) {
|
|
|
+ Log.d(LOG_TAG, String.format("getItemViewType: pos: %s, result: %s", position, type, mCachePlaceHoldView, mCacheFirstHeaderView));
|
|
|
+ }
|
|
|
+ return type;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * content view, content view holder, header[0], header and footer placeholder(s)
|
|
|
+ *
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ @Override
|
|
|
+ public int getViewTypeCount() {
|
|
|
+ int count = mAdapter == null ? 1 : mAdapter.getViewTypeCount();
|
|
|
+ if (mCachePlaceHoldView) {
|
|
|
+ int offset = mHeaderViewInfos.size() + 1 + mFooterViewInfos.size();
|
|
|
+ if (mCacheFirstHeaderView) {
|
|
|
+ offset += 1;
|
|
|
+ }
|
|
|
+ count += offset;
|
|
|
+ }
|
|
|
+ if (DEBUG) {
|
|
|
+ Log.d(LOG_TAG, String.format("getViewTypeCount: %s", count));
|
|
|
+ }
|
|
|
+ return count;
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public void registerDataSetObserver(DataSetObserver observer) {
|
|
|
+ mDataSetObservable.registerObserver(observer);
|
|
|
+ if (mAdapter != null) {
|
|
|
+ mAdapter.registerDataSetObserver(observer);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public void unregisterDataSetObserver(DataSetObserver observer) {
|
|
|
+ mDataSetObservable.unregisterObserver(observer);
|
|
|
+ if (mAdapter != null) {
|
|
|
+ mAdapter.unregisterDataSetObserver(observer);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public Filter getFilter() {
|
|
|
+ if (mIsFilterable) {
|
|
|
+ return ((Filterable) mAdapter).getFilter();
|
|
|
+ }
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+
|
|
|
+ @Override
|
|
|
+ public ListAdapter getWrappedAdapter() {
|
|
|
+ return mAdapter;
|
|
|
+ }
|
|
|
+
|
|
|
+ public void notifyDataSetChanged() {
|
|
|
+ mDataSetObservable.notifyChanged();
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
masensio
