Linkify footer preference title (a62b7971) · Commits · e / os / android_frameworks_base

packages/SettingsLib/FooterPreference/src/com/android/settingslib/widget/FooterPreference.java

+66 −29

Original line number	Diff line number	Diff line
		@@ -17,10 +17,15 @@
		package com.android.settingslib.widget;

		import android.content.Context;
		import android.content.Intent;
		import android.text.SpannableString;
		import android.text.Spanned;
		import android.text.TextUtils;
		import android.text.method.LinkMovementMethod;
		import android.text.style.ClickableSpan;
		import android.text.style.URLSpan;
		import android.util.AttributeSet;
		import android.util.Log;
		import android.view.View;
		import android.widget.TextView;

		@@ -32,18 +37,20 @@ import androidx.preference.PreferenceViewHolder;

		import com.android.settingslib.widget.preference.footer.R;

		import java.net.URISyntaxException;

		/**
		* A custom preference acting as "footer" of a page. It has a field for icon and text. It is added
		* to screen as the last preference.
		*/
		public class FooterPreference extends Preference {
		private static final String TAG = "FooterPreference";

		public static final String KEY_FOOTER = "footer_preference";
		private static final String INTENT_URL_PREFIX = "intent:";
		static final int ORDER_FOOTER = Integer.MAX_VALUE - 1;
		@VisibleForTesting
		View.OnClickListener mLearnMoreListener;
		@VisibleForTesting
		int mIconVisibility = View.VISIBLE;
		@VisibleForTesting View.OnClickListener mLearnMoreListener;
		@VisibleForTesting int mIconVisibility = View.VISIBLE;
		private CharSequence mContentDescription;
		private CharSequence mLearnMoreText;
		private FooterLearnMoreSpan mLearnMoreSpan;
		@@ -57,13 +64,57 @@ public class FooterPreference extends Preference {
		this(context, null);
		}

		private void linkifyTitle(TextView title) {
		final CharSequence text = getTitle();
		if (!(text instanceof Spanned)) {
		return;
		}
		final ClickableSpan[] spans =
		((Spanned) text).getSpans(0, text.length(), ClickableSpan.class);
		if (spans.length == 0) {
		return;
		}
		SpannableString spannable = new SpannableString(text);
		for (ClickableSpan clickable : spans) {
		if (!(clickable instanceof URLSpan)) {
		continue;
		}
		final URLSpan urlSpan = (URLSpan) clickable;
		if (!urlSpan.getURL().startsWith(INTENT_URL_PREFIX)) {
		continue;
		}
		final int start = spannable.getSpanStart(urlSpan);
		final int end = spannable.getSpanEnd(urlSpan);
		spannable.removeSpan(urlSpan);
		try {
		final Intent intent = Intent.parseUri(urlSpan.getURL(), Intent.URI_INTENT_SCHEME);
		final ClickableSpan clickableSpan =
		new ClickableSpan() {
		@Override
		public void onClick(@NonNull View textView) {
		// May throw ActivityNotFoundException. Just let it propagate.
		getContext().startActivity(intent);
		}
		};
		spannable.setSpan(clickableSpan, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
		} catch (URISyntaxException e) {
		Log.e(TAG, "Invalid URI " + urlSpan.getURL(), e);
		}
		}
		title.setText(spannable);
		title.setMovementMethod(LinkMovementMethod.getInstance());
		}

		@Override
		public void onBindViewHolder(PreferenceViewHolder holder) {
		super.onBindViewHolder(holder);
		TextView title = holder.itemView.findViewById(android.R.id.title);
		if (title != null && !TextUtils.isEmpty(mContentDescription)) {
		if (title != null) {
		if (!TextUtils.isEmpty(mContentDescription)) {
		title.setContentDescription(mContentDescription);
		}
		linkifyTitle(title);
		}

		TextView learnMore = holder.itemView.findViewById(R.id.settingslib_learn_more);
		if (learnMore != null) {
		@@ -79,8 +130,7 @@ public class FooterPreference extends Preference {
		learnMoreText.removeSpan(mLearnMoreSpan);
		}
		mLearnMoreSpan = new FooterLearnMoreSpan(mLearnMoreListener);
		learnMoreText.setSpan(mLearnMoreSpan, 0,
		learnMoreText.length(), 0);
		learnMoreText.setSpan(mLearnMoreSpan, 0, learnMoreText.length(), 0);
		learnMore.setText(learnMoreText);
		} else {
		learnMore.setVisibility(View.GONE);
		@@ -121,9 +171,7 @@ public class FooterPreference extends Preference {
		}
		}

		/**
		* Return the content description of footer preference.
		*/
		/** Return the content description of footer preference. */
		@VisibleForTesting
		CharSequence getContentDescription() {
		return mContentDescription;
		@@ -141,9 +189,7 @@ public class FooterPreference extends Preference {
		}
		}

		/**
		* Assign an action for the learn more link.
		*/
		/** Assign an action for the learn more link. */
		public void setLearnMoreAction(View.OnClickListener listener) {
		if (mLearnMoreListener != listener) {
		mLearnMoreListener = listener;
		@@ -151,9 +197,7 @@ public class FooterPreference extends Preference {
		}
		}

		/**
		* Set visibility of footer icon.
		*/
		/** Set visibility of footer icon. */
		public void setIconVisibility(int iconVisibility) {
		if (mIconVisibility == iconVisibility) {
		return;
		@@ -174,9 +218,7 @@ public class FooterPreference extends Preference {
		setSelectable(false);
		}

		/**
		* The builder is convenient to creat a dynamic FooterPreference.
		*/
		/** The builder is convenient to creat a dynamic FooterPreference. */
		public static class Builder {
		private Context mContext;
		private String mKey;
		@@ -241,8 +283,8 @@ public class FooterPreference extends Preference {
		}

		/**
		* To set learn more string of the learn more text. This can use for talkback
		* environment if developer wants to have a customization content.
		* To set learn more string of the learn more text. This can use for talkback environment if
		* developer wants to have a customization content.
		*
		* @param learnMoreText The resource id of the learn more string.
		*/
		@@ -262,10 +304,7 @@ public class FooterPreference extends Preference {
		return this;
		}


		/**
		* To generate the {@link FooterPreference}.
		*/
		/** To generate the {@link FooterPreference}. */
		public FooterPreference build() {
		final FooterPreference footerPreference = new FooterPreference(mContext);
		footerPreference.setSelectable(false);
		@@ -288,9 +327,7 @@ public class FooterPreference extends Preference {
		}
		}

		/**
		* A {@link URLSpan} that opens a support page when clicked
		*/
		/** A {@link URLSpan} that opens a support page when clicked */
		static class FooterLearnMoreSpan extends URLSpan {

		private final View.OnClickListener mClickListener;