/*******************************************************************************
* Copyright 2011, 2012 Chris Banes.
*
* 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.handmark.pulltorefresh.library.internal;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Typeface;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.Drawable;
import android.text.TextUtils;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.handmark.pulltorefresh.library.ILoadingLayout;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Orientation;
import com.handmark.pulltorefresh.library.R;
@SuppressLint("ViewConstructor")
public abstract class LoadingLayout extends FrameLayout implements
ILoadingLayout {
static final String LOG_TAG = "PullToRefresh-LoadingLayout";
static final Interpolator ANIMATION_INTERPOLATOR = new LinearInterpolator();
private LinearLayout mInnerLayout;
protected final ImageView mHeaderImage;
protected final TextView logoImage;
protected final ProgressBar mHeaderProgress;
private boolean mUseIntrinsicAnimation;
private final TextView mHeaderText;
private final TextView mSubHeaderText;
protected final Mode mMode;
protected final Orientation mScrollDirection;
private CharSequence mPullLabel;
private CharSequence mRefreshingLabel;
private CharSequence mReleaseLabel;
public LoadingLayout(Context context, final Mode mode,
final Orientation scrollDirection, TypedArray attrs) {
super(context);
mMode = mode;
mScrollDirection = scrollDirection;
switch (scrollDirection) {
case HORIZONTAL:
LayoutInflater.from(context).inflate(
R.layout.pull_to_refresh_header_horizontal, this);
break;
case VERTICAL:
default:
LayoutInflater.from(context).inflate(
R.layout.pull_to_refresh_header_vertical, this);
break;
}
mInnerLayout = (LinearLayout) findViewById(R.id.fl_inner);
mHeaderText = (TextView) mInnerLayout
.findViewById(R.id.pull_to_refresh_text);
mHeaderProgress = (ProgressBar) mInnerLayout
.findViewById(R.id.pull_to_refresh_progress);
mSubHeaderText = (TextView) mInnerLayout
.findViewById(R.id.pull_to_refresh_sub_text);
mHeaderImage = (ImageView) mInnerLayout
.findViewById(R.id.pull_to_refresh_image);
logoImage = (TextView) mInnerLayout
.findViewById(R.id.pull_to_refresh_logo);
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mInnerLayout
.getLayoutParams();
switch (mode) {
case PULL_FROM_END:
lp.gravity = scrollDirection == Orientation.VERTICAL ? Gravity.TOP
: Gravity.LEFT;
// Load in labels
mPullLabel = context
.getString(R.string.pull_to_refresh_from_bottom_pull_label);
mRefreshingLabel = context
.getString(R.string.pull_to_refresh_from_bottom_refreshing_label);
mReleaseLabel = context
.getString(R.string.pull_to_refresh_from_bottom_release_label);
break;
case PULL_FROM_START:
default:
lp.gravity = scrollDirection == Orientation.VERTICAL ? Gravity.BOTTOM
: Gravity.RIGHT;
// Load in labels
mPullLabel = context.getString(R.string.pull_to_refresh_pull_label);
mRefreshingLabel = context
.getString(R.string.pull_to_refresh_refreshing_label);
mReleaseLabel = context
.getString(R.string.pull_to_refresh_release_label);
break;
}
if (attrs.hasValue(R.styleable.PullToRefresh_ptrHeaderBackground)) {
Drawable background = attrs
.getDrawable(R.styleable.PullToRefresh_ptrHeaderBackground);
if (null != background) {
ViewCompat.setBackground(this, background);
}
}
if (attrs.hasValue(R.styleable.PullToRefresh_ptrHeaderTextAppearance)) {
TypedValue styleID = new TypedValue();
attrs.getValue(R.styleable.PullToRefresh_ptrHeaderTextAppearance,
styleID);
setTextAppearance(styleID.data);
}
if (attrs
.hasValue(R.styleable.PullToRefresh_ptrSubHeaderTextAppearance)) {
TypedValue styleID = new TypedValue();
attrs.getValue(
R.styleable.PullToRefresh_ptrSubHeaderTextAppearance,
styleID);
setSubTextAppearance(styleID.data);
}
// Text Color attrs need to be set after TextAppearance attrs
if (attrs.hasValue(R.styleable.PullToRefresh_ptrHeaderTextColor)) {
ColorStateList colors = attrs
.getColorStateList(R.styleable.PullToRefresh_ptrHeaderTextColor);
if (null != colors) {
setTextColor(colors);
}
}
if (attrs.hasValue(R.styleable.PullToRefresh_ptrHeaderSubTextColor)) {
ColorStateList colors = attrs
.getColorStateList(R.styleable.PullToRefresh_ptrHeaderSubTextColor);
if (null != colors) {
setSubTextColor(colors);
}
}
// Try and get defined drawable from Attrs
Drawable imageDrawable = null;
if (attrs.hasValue(R.styleable.PullToRefresh_ptrDrawable)) {
imageDrawable = attrs
.getDrawable(R.styleable.PullToRefresh_ptrDrawable);
}
// Check Specific Drawable from Attrs, these overrite the generic
// drawable attr above
switch (mode) {
case PULL_FROM_START:
default:
if (attrs.hasValue(R.styleable.PullToRefresh_ptrDrawableStart)) {
imageDrawable = attrs
.getDrawable(R.styleable.PullToRefresh_ptrDrawableStart);
} else if (attrs.hasValue(R.styleable.PullToRefresh_ptrDrawableTop)) {
Utils.warnDeprecation("ptrDrawableTop", "ptrDrawableStart");
imageDrawable = attrs
.getDrawable(R.styleable.PullToRefresh_ptrDrawableTop);
}
break;
case PULL_FROM_END:
if (attrs.hasValue(R.styleable.PullToRefresh_ptrDrawableEnd)) {
imageDrawable = attrs
.getDrawable(R.styleable.PullToRefresh_ptrDrawableEnd);
} else if (attrs
.hasValue(R.styleable.PullToRefresh_ptrDrawableBottom)) {
Utils.warnDeprecation("ptrDrawableBottom", "ptrDrawableEnd");
imageDrawable = attrs
.getDrawable(R.styleable.PullToRefresh_ptrDrawableBottom);
}
break;
}
// If we don't have a user defined drawable, load the default
if (null == imageDrawable) {
imageDrawable = context.getResources().getDrawable(
getDefaultDrawableResId());
}
// Set Drawable, and save width/height
setLoadingDrawable(imageDrawable);
reset();
}
public final void setHeight(int height) {
ViewGroup.LayoutParams lp = (ViewGroup.LayoutParams) getLayoutParams();
lp.height = height;
requestLayout();
}
public final void setWidth(int width) {
ViewGroup.LayoutParams lp = (ViewGroup.LayoutParams) getLayoutParams();
lp.width = width;
requestLayout();
}
public final int getContentSize() {
switch (mScrollDirection) {
case HORIZONTAL:
return mInnerLayout.getWidth();
case VERTICAL:
default:
return mInnerLayout.getHeight() - logoImage.getHeight();
}
}
public final void setLogoshow(boolean b) {
logoImage.setVisibility(b ? View.VISIBLE : View.GONE);
}
public final void hideAllViews() {
if (View.VISIBLE == mHeaderText.getVisibility()) {
mHeaderText.setVisibility(View.INVISIBLE);
}
if (View.VISIBLE == logoImage.getVisibility()) {
logoImage.setVisibility(View.INVISIBLE);
}
if (View.VISIBLE == mHeaderProgress.getVisibility()) {
mHeaderProgress.setVisibility(View.INVISIBLE);
}
if (View.VISIBLE == mHeaderImage.getVisibility()) {
mHeaderImage.setVisibility(View.INVISIBLE);
}
if (View.VISIBLE == mSubHeaderText.getVisibility()) {
mSubHeaderText.setVisibility(View.INVISIBLE);
}
}
public final void onPull(float scaleOfLayout) {
if (!mUseIntrinsicAnimation) {
onPullImpl(scaleOfLayout);
}
}
public final void pullToRefresh() {
if (null != mHeaderText) {
mHeaderText.setText(mPullLabel);
}
// Now call the callback
pullToRefreshImpl();
}
public final void refreshing() {
if (null != mHeaderText) {
mHeaderText.setText(mRefreshingLabel);
}
if (mUseIntrinsicAnimation) {
((AnimationDrawable) mHeaderImage.getDrawable()).start();
} else {
// Now call the callback
refreshingImpl();
}
if (null != mSubHeaderText) {
mSubHeaderText.setVisibility(View.GONE);
}
}
public final void releaseToRefresh() {
if (null != mHeaderText) {
mHeaderText.setText(mReleaseLabel);
}
// Now call the callback
releaseToRefreshImpl();
}
public final void reset() {
if (null != mHeaderText) {
mHeaderText.setText(mPullLabel);
}
mHeaderImage.setVisibility(View.VISIBLE);
if (mUseIntrinsicAnimation) {
((AnimationDrawable) mHeaderImage.getDrawable()).stop();
} else {
// Now call the callback
resetImpl();
}
if (null != mSubHeaderText) {
if (TextUtils.isEmpty(mSubHeaderText.getText())) {
mSubHeaderText.setVisibility(View.GONE);
} else {
mSubHeaderText.setVisibility(View.VISIBLE);
}
}
}
@Override
public void setLastUpdatedLabel(CharSequence label) {
setSubHeaderText(label);
}
public final void setLoadingDrawable(Drawable imageDrawable) {
// Set Drawable
mHeaderImage.setImageDrawable(imageDrawable);
mUseIntrinsicAnimation = (imageDrawable instanceof AnimationDrawable);
// Now call the callback
onLoadingDrawableSet(imageDrawable);
}
public void setPullLabel(CharSequence pullLabel) {
mPullLabel = pullLabel;
}
public void setRefreshingLabel(CharSequence refreshingLabel) {
mRefreshingLabel = refreshingLabel;
}
public void setReleaseLabel(CharSequence releaseLabel) {
mReleaseLabel = releaseLabel;
}
@Override
public void setTextTypeface(Typeface tf) {
mHeaderText.setTypeface(tf);
}
public final void showInvisibleViews() {
if (View.INVISIBLE == mHeaderText.getVisibility()) {
mHeaderText.setVisibility(View.VISIBLE);
}
if (View.INVISIBLE == logoImage.getVisibility()) {
logoImage.setVisibility(View.VISIBLE);
}
if (View.INVISIBLE == mHeaderProgress.getVisibility()) {
mHeaderProgress.setVisibility(View.VISIBLE);
}
if (View.INVISIBLE == mHeaderImage.getVisibility()) {
mHeaderImage.setVisibility(View.VISIBLE);
}
if (View.INVISIBLE == mSubHeaderText.getVisibility()) {
mSubHeaderText.setVisibility(View.VISIBLE);
}
}
/**
* Callbacks for derivative Layouts
*/
protected abstract int getDefaultDrawableResId();
protected abstract void onLoadingDrawableSet(Drawable imageDrawable);
protected abstract void onPullImpl(float scaleOfLayout);
protected abstract void pullToRefreshImpl();
protected abstract void refreshingImpl();
protected abstract void releaseToRefreshImpl();
protected abstract void resetImpl();
private void setSubHeaderText(CharSequence label) {
if (null != mSubHeaderText) {
if (TextUtils.isEmpty(label)) {
mSubHeaderText.setVisibility(View.GONE);
} else {
mSubHeaderText.setText(label);
// Only set it to Visible if we're GONE, otherwise VISIBLE will
// be set soon
if (View.GONE == mSubHeaderText.getVisibility()) {
mSubHeaderText.setVisibility(View.VISIBLE);
}
}
}
}
private void setSubTextAppearance(int value) {
if (null != mSubHeaderText) {
mSubHeaderText.setTextAppearance(getContext(), value);
}
}
private void setSubTextColor(ColorStateList color) {
if (null != mSubHeaderText) {
mSubHeaderText.setTextColor(color);
}
}
private void setTextAppearance(int value) {
if (null != mHeaderText) {
mHeaderText.setTextAppearance(getContext(), value);
}
if (null != mSubHeaderText) {
mSubHeaderText.setTextAppearance(getContext(), value);
}
}
private void setTextColor(ColorStateList color) {
if (null != mHeaderText) {
mHeaderText.setTextColor(color);
}
if (null != mSubHeaderText) {
mSubHeaderText.setTextColor(color);
}
}
}
