Adjust gallery search
This commit is contained in:
seven332 committed
1 parent
ffd122c105
commit
65aec91029
12 files changed
+385
-77
No files matched your search
@@ -0,0 +1,266 @@
|
||||
/*
|
||||
* Copyright 2016 Hippo Seven
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.hippo.widget;
|
||||
|
||||
import android.content.Context;
|
||||
import android.content.res.TypedArray;
|
||||
import android.support.annotation.IdRes;
|
||||
import android.util.AttributeSet;
|
||||
import android.view.View;
|
||||
import android.view.ViewGroup;
|
||||
import android.widget.CompoundButton;
|
||||
import android.widget.RadioButton;
|
||||
|
||||
import com.hippo.yorozuya.ViewUtils;
|
||||
|
||||
public class RadioGridGroup extends SimpleGridLayout {
|
||||
|
||||
private static final int[] RADIO_ATTRS = new int[] {
|
||||
android.R.attr.checkedButton
|
||||
};
|
||||
|
||||
// holds the checked id; the selection is empty by default
|
||||
private int mCheckedId = -1;
|
||||
// tracks children radio buttons checked state
|
||||
private CompoundButton.OnCheckedChangeListener mChildOnCheckedChangeListener;
|
||||
// when true, mOnCheckedChangeListener discards events
|
||||
private boolean mProtectFromCheckedChange = false;
|
||||
private OnCheckedChangeListener mOnCheckedChangeListener;
|
||||
private PassThroughHierarchyChangeListener mPassThroughListener;
|
||||
|
||||
public RadioGridGroup(Context context, AttributeSet attrs) {
|
||||
super(context, attrs);
|
||||
init(context, attrs);
|
||||
}
|
||||
|
||||
public RadioGridGroup(Context context, AttributeSet attrs, int defStyle) {
|
||||
super(context, attrs, defStyle);
|
||||
init(context, attrs);
|
||||
}
|
||||
|
||||
private void init(Context context, AttributeSet attrs) {
|
||||
final TypedArray a = context.obtainStyledAttributes(attrs, RADIO_ATTRS);
|
||||
int value = a.getResourceId(0, View.NO_ID);
|
||||
if (value != View.NO_ID) {
|
||||
mCheckedId = value;
|
||||
}
|
||||
a.recycle();
|
||||
|
||||
mChildOnCheckedChangeListener = new CheckedStateTracker();
|
||||
mPassThroughListener = new PassThroughHierarchyChangeListener();
|
||||
super.setOnHierarchyChangeListener(mPassThroughListener);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void setOnHierarchyChangeListener(OnHierarchyChangeListener listener) {
|
||||
// the user listener is delegated to our pass-through listener
|
||||
mPassThroughListener.mOnHierarchyChangeListener = listener;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
protected void onFinishInflate() {
|
||||
super.onFinishInflate();
|
||||
|
||||
// checks the appropriate radio button as requested in the XML file
|
||||
if (mCheckedId != -1) {
|
||||
mProtectFromCheckedChange = true;
|
||||
setCheckedStateForView(mCheckedId, true);
|
||||
mProtectFromCheckedChange = false;
|
||||
setCheckedId(mCheckedId);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void addView(View child, int index, ViewGroup.LayoutParams params) {
|
||||
if (child instanceof RadioButton) {
|
||||
final RadioButton button = (RadioButton) child;
|
||||
if (button.isChecked()) {
|
||||
mProtectFromCheckedChange = true;
|
||||
if (mCheckedId != -1) {
|
||||
setCheckedStateForView(mCheckedId, false);
|
||||
}
|
||||
mProtectFromCheckedChange = false;
|
||||
setCheckedId(button.getId());
|
||||
}
|
||||
}
|
||||
|
||||
super.addView(child, index, params);
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>Sets the selection to the radio button whose identifier is passed in
|
||||
* parameter. Using -1 as the selection identifier clears the selection;
|
||||
* such an operation is equivalent to invoking {@link #clearCheck()}.</p>
|
||||
*
|
||||
* @param id the unique id of the radio button to select in this group
|
||||
*
|
||||
* @see #getCheckedRadioButtonId()
|
||||
* @see #clearCheck()
|
||||
*/
|
||||
public void check(@IdRes int id) {
|
||||
// don't even bother
|
||||
if (id != -1 && (id == mCheckedId)) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (mCheckedId != -1) {
|
||||
setCheckedStateForView(mCheckedId, false);
|
||||
}
|
||||
|
||||
if (id != -1) {
|
||||
setCheckedStateForView(id, true);
|
||||
}
|
||||
|
||||
setCheckedId(id);
|
||||
}
|
||||
|
||||
private void setCheckedId(@IdRes int id) {
|
||||
mCheckedId = id;
|
||||
if (mOnCheckedChangeListener != null) {
|
||||
mOnCheckedChangeListener.onCheckedChanged(this, mCheckedId);
|
||||
}
|
||||
}
|
||||
|
||||
private void setCheckedStateForView(int viewId, boolean checked) {
|
||||
View checkedView = findViewById(viewId);
|
||||
if (checkedView != null && checkedView instanceof RadioButton) {
|
||||
((RadioButton) checkedView).setChecked(checked);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>Returns the identifier of the selected radio button in this group.
|
||||
* Upon empty selection, the returned value is -1.</p>
|
||||
*
|
||||
* @return the unique id of the selected radio button in this group
|
||||
*
|
||||
* @see #check(int)
|
||||
* @see #clearCheck()
|
||||
*/
|
||||
@IdRes
|
||||
public int getCheckedRadioButtonId() {
|
||||
return mCheckedId;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>Clears the selection. When the selection is cleared, no radio button
|
||||
* in this group is selected and {@link #getCheckedRadioButtonId()} returns
|
||||
* null.</p>
|
||||
*
|
||||
* @see #check(int)
|
||||
* @see #getCheckedRadioButtonId()
|
||||
*/
|
||||
public void clearCheck() {
|
||||
check(-1);
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>Register a callback to be invoked when the checked radio button
|
||||
* changes in this group.</p>
|
||||
*
|
||||
* @param listener the callback to call on checked state change
|
||||
*/
|
||||
public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
|
||||
mOnCheckedChangeListener = listener;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>Interface definition for a callback to be invoked when the checked
|
||||
* radio button changed in this group.</p>
|
||||
*/
|
||||
public interface OnCheckedChangeListener {
|
||||
/**
|
||||
* <p>Called when the checked radio button has changed. When the
|
||||
* selection is cleared, checkedId is -1.</p>
|
||||
*
|
||||
* @param group the group in which the checked radio button has changed
|
||||
* @param checkedId the unique identifier of the newly checked radio button
|
||||
*/
|
||||
void onCheckedChanged(RadioGridGroup group, @IdRes int checkedId);
|
||||
}
|
||||
|
||||
private class CheckedStateTracker implements CompoundButton.OnCheckedChangeListener {
|
||||
@Override
|
||||
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
|
||||
// prevents from infinite recursion
|
||||
if (mProtectFromCheckedChange) {
|
||||
return;
|
||||
}
|
||||
|
||||
mProtectFromCheckedChange = true;
|
||||
if (mCheckedId != -1) {
|
||||
setCheckedStateForView(mCheckedId, false);
|
||||
}
|
||||
mProtectFromCheckedChange = false;
|
||||
|
||||
int id = buttonView.getId();
|
||||
setCheckedId(id);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>A pass-through listener acts upon the events and dispatches them
|
||||
* to another listener. This allows the table layout to set its own internal
|
||||
* hierarchy change listener without preventing the user to setup his.</p>
|
||||
*/
|
||||
private class PassThroughHierarchyChangeListener implements
|
||||
ViewGroup.OnHierarchyChangeListener {
|
||||
private ViewGroup.OnHierarchyChangeListener mOnHierarchyChangeListener;
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void onChildViewAdded(View parent, View child) {
|
||||
if (parent == RadioGridGroup.this && child instanceof RadioButton) {
|
||||
int id = child.getId();
|
||||
// generates an id if it's missing
|
||||
if (id == View.NO_ID) {
|
||||
id = ViewUtils.generateViewId();
|
||||
child.setId(id);
|
||||
}
|
||||
((RadioButton) child).setOnCheckedChangeListener(
|
||||
mChildOnCheckedChangeListener);
|
||||
}
|
||||
|
||||
if (mOnHierarchyChangeListener != null) {
|
||||
mOnHierarchyChangeListener.onChildViewAdded(parent, child);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public void onChildViewRemoved(View parent, View child) {
|
||||
if (parent == RadioGridGroup.this && child instanceof RadioButton) {
|
||||
((RadioButton) child).setOnCheckedChangeListener(null);
|
||||
}
|
||||
|
||||
if (mOnHierarchyChangeListener != null) {
|
||||
mOnHierarchyChangeListener.onChildViewRemoved(parent, child);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user