279 lines
9.3 KiB
Java
279 lines
9.3 KiB
Java
package androidx.cursoradapter.widget;
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import android.content.Context;
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import android.database.ContentObserver;
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import android.database.Cursor;
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import android.database.DataSetObserver;
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import android.os.Handler;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.BaseAdapter;
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import android.widget.Filter;
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import android.widget.FilterQueryProvider;
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import android.widget.Filterable;
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import androidx.annotation.RestrictTo;
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import androidx.cursoradapter.widget.CursorFilter;
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import c.d.b.a.a;
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public abstract class CursorAdapter extends BaseAdapter implements Filterable, CursorFilter.CursorFilterClient {
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@Deprecated
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public static final int FLAG_AUTO_REQUERY = 1;
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public static final int FLAG_REGISTER_CONTENT_OBSERVER = 2;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public boolean mAutoRequery;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public ChangeObserver mChangeObserver;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public Context mContext;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public Cursor mCursor;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public CursorFilter mCursorFilter;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public DataSetObserver mDataSetObserver;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public boolean mDataValid;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public FilterQueryProvider mFilterQueryProvider;
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@RestrictTo({RestrictTo.Scope.LIBRARY_GROUP})
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public int mRowIDColumn;
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public class ChangeObserver extends ContentObserver {
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public ChangeObserver() {
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super(new Handler());
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}
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@Override // android.database.ContentObserver
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public boolean deliverSelfNotifications() {
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return true;
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}
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@Override // android.database.ContentObserver
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public void onChange(boolean z2) {
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CursorAdapter.this.onContentChanged();
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}
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}
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public class MyDataSetObserver extends DataSetObserver {
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public MyDataSetObserver() {
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}
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@Override // android.database.DataSetObserver
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public void onChanged() {
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CursorAdapter cursorAdapter = CursorAdapter.this;
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cursorAdapter.mDataValid = true;
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cursorAdapter.notifyDataSetChanged();
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}
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@Override // android.database.DataSetObserver
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public void onInvalidated() {
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CursorAdapter cursorAdapter = CursorAdapter.this;
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cursorAdapter.mDataValid = false;
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cursorAdapter.notifyDataSetInvalidated();
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}
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}
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@Deprecated
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public CursorAdapter(Context context, Cursor cursor) {
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init(context, cursor, 1);
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}
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public CursorAdapter(Context context, Cursor cursor, int i) {
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init(context, cursor, i);
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}
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public CursorAdapter(Context context, Cursor cursor, boolean z2) {
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init(context, cursor, z2 ? 1 : 2);
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}
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public abstract void bindView(View view, Context context, Cursor cursor);
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@Override // androidx.cursoradapter.widget.CursorFilter.CursorFilterClient
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public void changeCursor(Cursor cursor) {
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Cursor swapCursor = swapCursor(cursor);
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if (swapCursor != null) {
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swapCursor.close();
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}
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}
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@Override // androidx.cursoradapter.widget.CursorFilter.CursorFilterClient
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public CharSequence convertToString(Cursor cursor) {
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return cursor == null ? "" : cursor.toString();
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}
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@Override // android.widget.Adapter
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public int getCount() {
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Cursor cursor;
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if (!this.mDataValid || (cursor = this.mCursor) == null) {
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return 0;
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}
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return cursor.getCount();
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}
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@Override // androidx.cursoradapter.widget.CursorFilter.CursorFilterClient
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public Cursor getCursor() {
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return this.mCursor;
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}
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@Override // android.widget.BaseAdapter, android.widget.SpinnerAdapter
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public View getDropDownView(int i, View view, ViewGroup viewGroup) {
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if (!this.mDataValid) {
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return null;
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}
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this.mCursor.moveToPosition(i);
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if (view == null) {
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view = newDropDownView(this.mContext, this.mCursor, viewGroup);
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}
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bindView(view, this.mContext, this.mCursor);
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return view;
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}
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@Override // android.widget.Filterable
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public Filter getFilter() {
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if (this.mCursorFilter == null) {
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this.mCursorFilter = new CursorFilter(this);
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}
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return this.mCursorFilter;
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}
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public FilterQueryProvider getFilterQueryProvider() {
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return this.mFilterQueryProvider;
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}
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@Override // android.widget.Adapter
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public Object getItem(int i) {
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Cursor cursor;
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if (!this.mDataValid || (cursor = this.mCursor) == null) {
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return null;
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}
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cursor.moveToPosition(i);
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return this.mCursor;
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}
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@Override // android.widget.Adapter
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public long getItemId(int i) {
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Cursor cursor;
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if (!this.mDataValid || (cursor = this.mCursor) == null || !cursor.moveToPosition(i)) {
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return 0;
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}
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return this.mCursor.getLong(this.mRowIDColumn);
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}
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@Override // android.widget.Adapter
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public View getView(int i, View view, ViewGroup viewGroup) {
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if (!this.mDataValid) {
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throw new IllegalStateException("this should only be called when the cursor is valid");
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} else if (this.mCursor.moveToPosition(i)) {
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if (view == null) {
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view = newView(this.mContext, this.mCursor, viewGroup);
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}
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bindView(view, this.mContext, this.mCursor);
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return view;
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} else {
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throw new IllegalStateException(a.k("couldn't move cursor to position ", i));
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}
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}
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@Override // android.widget.BaseAdapter, android.widget.Adapter
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public boolean hasStableIds() {
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return true;
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}
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public void init(Context context, Cursor cursor, int i) {
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boolean z2 = false;
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if ((i & 1) == 1) {
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i |= 2;
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this.mAutoRequery = true;
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} else {
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this.mAutoRequery = false;
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}
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if (cursor != null) {
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z2 = true;
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}
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this.mCursor = cursor;
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this.mDataValid = z2;
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this.mContext = context;
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this.mRowIDColumn = z2 ? cursor.getColumnIndexOrThrow("_id") : -1;
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if ((i & 2) == 2) {
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this.mChangeObserver = new ChangeObserver();
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this.mDataSetObserver = new MyDataSetObserver();
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} else {
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this.mChangeObserver = null;
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this.mDataSetObserver = null;
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}
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if (z2) {
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ChangeObserver changeObserver = this.mChangeObserver;
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if (changeObserver != null) {
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cursor.registerContentObserver(changeObserver);
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}
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DataSetObserver dataSetObserver = this.mDataSetObserver;
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if (dataSetObserver != null) {
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cursor.registerDataSetObserver(dataSetObserver);
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}
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}
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}
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@Deprecated
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public void init(Context context, Cursor cursor, boolean z2) {
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init(context, cursor, z2 ? 1 : 2);
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}
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public View newDropDownView(Context context, Cursor cursor, ViewGroup viewGroup) {
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return newView(context, cursor, viewGroup);
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}
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public abstract View newView(Context context, Cursor cursor, ViewGroup viewGroup);
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public void onContentChanged() {
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Cursor cursor;
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if (this.mAutoRequery && (cursor = this.mCursor) != null && !cursor.isClosed()) {
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this.mDataValid = this.mCursor.requery();
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}
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}
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@Override // androidx.cursoradapter.widget.CursorFilter.CursorFilterClient
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public Cursor runQueryOnBackgroundThread(CharSequence charSequence) {
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FilterQueryProvider filterQueryProvider = this.mFilterQueryProvider;
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return filterQueryProvider != null ? filterQueryProvider.runQuery(charSequence) : this.mCursor;
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}
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public void setFilterQueryProvider(FilterQueryProvider filterQueryProvider) {
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this.mFilterQueryProvider = filterQueryProvider;
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}
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public Cursor swapCursor(Cursor cursor) {
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Cursor cursor2 = this.mCursor;
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if (cursor == cursor2) {
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return null;
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}
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if (cursor2 != null) {
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ChangeObserver changeObserver = this.mChangeObserver;
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if (changeObserver != null) {
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cursor2.unregisterContentObserver(changeObserver);
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}
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DataSetObserver dataSetObserver = this.mDataSetObserver;
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if (dataSetObserver != null) {
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cursor2.unregisterDataSetObserver(dataSetObserver);
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}
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}
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this.mCursor = cursor;
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if (cursor != null) {
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ChangeObserver changeObserver2 = this.mChangeObserver;
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if (changeObserver2 != null) {
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cursor.registerContentObserver(changeObserver2);
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}
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DataSetObserver dataSetObserver2 = this.mDataSetObserver;
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if (dataSetObserver2 != null) {
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cursor.registerDataSetObserver(dataSetObserver2);
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}
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this.mRowIDColumn = cursor.getColumnIndexOrThrow("_id");
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this.mDataValid = true;
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notifyDataSetChanged();
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} else {
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this.mRowIDColumn = -1;
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this.mDataValid = false;
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notifyDataSetInvalidated();
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}
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return cursor2;
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}
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}
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