109 lines
3.1 KiB
Java
109 lines
3.1 KiB
Java
package androidx.viewpager.widget;
|
|
|
|
import android.database.DataSetObservable;
|
|
import android.database.DataSetObserver;
|
|
import android.os.Parcelable;
|
|
import android.view.View;
|
|
import android.view.ViewGroup;
|
|
import androidx.annotation.NonNull;
|
|
import androidx.annotation.Nullable;
|
|
public abstract class PagerAdapter {
|
|
public static final int POSITION_NONE = -2;
|
|
public static final int POSITION_UNCHANGED = -1;
|
|
private final DataSetObservable mObservable = new DataSetObservable();
|
|
private DataSetObserver mViewPagerObserver;
|
|
|
|
@Deprecated
|
|
public void destroyItem(@NonNull View view, int i, @NonNull Object obj) {
|
|
throw new UnsupportedOperationException("Required method destroyItem was not overridden");
|
|
}
|
|
|
|
public void destroyItem(@NonNull ViewGroup viewGroup, int i, @NonNull Object obj) {
|
|
destroyItem((View) viewGroup, i, obj);
|
|
}
|
|
|
|
@Deprecated
|
|
public void finishUpdate(@NonNull View view) {
|
|
}
|
|
|
|
public void finishUpdate(@NonNull ViewGroup viewGroup) {
|
|
finishUpdate((View) viewGroup);
|
|
}
|
|
|
|
public abstract int getCount();
|
|
|
|
public int getItemPosition(@NonNull Object obj) {
|
|
return -1;
|
|
}
|
|
|
|
@Nullable
|
|
public CharSequence getPageTitle(int i) {
|
|
return null;
|
|
}
|
|
|
|
public float getPageWidth(int i) {
|
|
return 1.0f;
|
|
}
|
|
|
|
@NonNull
|
|
@Deprecated
|
|
public Object instantiateItem(@NonNull View view, int i) {
|
|
throw new UnsupportedOperationException("Required method instantiateItem was not overridden");
|
|
}
|
|
|
|
@NonNull
|
|
public Object instantiateItem(@NonNull ViewGroup viewGroup, int i) {
|
|
return instantiateItem((View) viewGroup, i);
|
|
}
|
|
|
|
public abstract boolean isViewFromObject(@NonNull View view, @NonNull Object obj);
|
|
|
|
public void notifyDataSetChanged() {
|
|
synchronized (this) {
|
|
DataSetObserver dataSetObserver = this.mViewPagerObserver;
|
|
if (dataSetObserver != null) {
|
|
dataSetObserver.onChanged();
|
|
}
|
|
}
|
|
this.mObservable.notifyChanged();
|
|
}
|
|
|
|
public void registerDataSetObserver(@NonNull DataSetObserver dataSetObserver) {
|
|
this.mObservable.registerObserver(dataSetObserver);
|
|
}
|
|
|
|
public void restoreState(@Nullable Parcelable parcelable, @Nullable ClassLoader classLoader) {
|
|
}
|
|
|
|
@Nullable
|
|
public Parcelable saveState() {
|
|
return null;
|
|
}
|
|
|
|
@Deprecated
|
|
public void setPrimaryItem(@NonNull View view, int i, @NonNull Object obj) {
|
|
}
|
|
|
|
public void setPrimaryItem(@NonNull ViewGroup viewGroup, int i, @NonNull Object obj) {
|
|
setPrimaryItem((View) viewGroup, i, obj);
|
|
}
|
|
|
|
public void setViewPagerObserver(DataSetObserver dataSetObserver) {
|
|
synchronized (this) {
|
|
this.mViewPagerObserver = dataSetObserver;
|
|
}
|
|
}
|
|
|
|
@Deprecated
|
|
public void startUpdate(@NonNull View view) {
|
|
}
|
|
|
|
public void startUpdate(@NonNull ViewGroup viewGroup) {
|
|
startUpdate((View) viewGroup);
|
|
}
|
|
|
|
public void unregisterDataSetObserver(@NonNull DataSetObserver dataSetObserver) {
|
|
this.mObservable.unregisterObserver(dataSetObserver);
|
|
}
|
|
}
|