Merge "Added support for custom text selection." (f87c1fbb) · Commits · e / os / android_packages_apps_DocumentsUI

src/com/android/documentsui/inspector/HeaderTextSelector.java

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		/*
		* Copyright (C) 2017 The Android Open Source Project
		*
		* 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.android.documentsui.inspector;

		import static com.android.internal.util.Preconditions.checkArgument;

		import android.text.Spannable;
		import android.view.ActionMode;
		import android.view.Menu;
		import android.view.MenuItem;
		import android.widget.TextView;

		/**
		* Selects all or part of a textview.
		*/
		public final class HeaderTextSelector implements ActionMode.Callback {

		private final TextView mText;
		private final Selector mSelector;

		public HeaderTextSelector(TextView text, Selector selector) {
		checkArgument(text != null);
		checkArgument(selector != null);
		mText = text;
		mSelector = selector;
		}

		// An action mode is created when the user selects text. This method is called where
		// we force it to select only the filename in the header. Meaning the name of the file would
		// be selected but the extension would not.
		@Override
		public boolean onCreateActionMode(ActionMode actionMode, Menu menu) {
		CharSequence value = mText.getText();
		if (value instanceof Spannable) {
		mSelector.select((Spannable) value, 0, getLengthOfFilename(value));
		}
		return true;
		}

		@Override
		public boolean onPrepareActionMode(ActionMode actionMode, Menu menu) {
		return true;
		}

		@Override
		public boolean onActionItemClicked(ActionMode actionMode, MenuItem menuItem) {
		return false;
		}

		@Override
		public void onDestroyActionMode(ActionMode actionMode) {}

		/**
		* Gets the length of the inspector header for selection.
		*
		* Example:
		* filename.txt returns the end index needed to select "filename".
		*
		* @return the index of the last character in the filename
		*/
		private static int getLengthOfFilename(CharSequence text) {
		String title = text.toString();
		if (title != null) {
		int index = title.indexOf('.');
		if (index > 0) {
		return index;
		}
		}

		return text.length();
		}

		public interface Selector {
		void select(Spannable text, int start, int stop);
		}
		}

src/com/android/documentsui/inspector/HeaderView.java

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		@@ -20,6 +20,8 @@ import android.content.Context;
		import android.graphics.Bitmap;
		import android.graphics.Point;
		import android.graphics.drawable.Drawable;
		import android.text.Selection;
		import android.text.Spannable;
		import android.util.AttributeSet;
		import android.view.LayoutInflater;
		import android.view.View;
		@@ -77,6 +79,12 @@ public final class HeaderView extends RelativeLayout implements HeaderDisplay {
		public void accept(DocumentInfo info, String displayName) {
		loadHeaderImage(info);
		mTitle.setText(displayName);
		mTitle.setCustomSelectionActionModeCallback(
		new HeaderTextSelector(mTitle, this::selectText));
		}

		private void selectText(Spannable text, int start, int stop) {
		Selection.setSelection(text, start, stop);
		}

		private void loadHeaderImage(DocumentInfo doc) {

tests/unit/com/android/documentsui/inspector/HeaderTextSelectorTest.java

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+136 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 The Android Open Source Project
		*
		* 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.android.documentsui.inspector;

		import static junit.framework.Assert.assertEquals;
		import static junit.framework.Assert.assertTrue;

		import android.content.Context;
		import android.support.test.InstrumentationRegistry;
		import android.support.test.runner.AndroidJUnit4;

		import android.test.suitebuilder.annotation.SmallTest;
		import android.text.Spannable;
		import android.text.SpannableString;
		import android.widget.TextView;
		import com.android.documentsui.inspector.HeaderTextSelector.Selector;
		import org.junit.Before;
		import org.junit.Test;
		import org.junit.runner.RunWith;

		@RunWith(AndroidJUnit4.class)
		@SmallTest
		public class HeaderTextSelectorTest {

		private Context mContext;
		private TestTextView mTestTextView;
		private TestSelector mTestSelector;
		private HeaderTextSelector mSelector;

		@Before
		public void setUp() throws Exception {
		mContext = InstrumentationRegistry.getTargetContext();
		mTestTextView = new TestTextView(mContext);
		mTestSelector = new TestSelector();
		mSelector = new HeaderTextSelector(mTestTextView, mTestSelector);
		}

		@Test
		public void testSimpleFileName() throws Exception {
		CharSequence fileName = "filename";
		String extension = ".txt";
		String testSequence = fileName + extension;

		mTestTextView.setText(testSequence);
		mSelector.onCreateActionMode(null, null);
		mTestSelector.assertCalled();

		CharSequence selectedSequence =
		testSequence.subSequence(mTestSelector.mStart, mTestSelector.mStop);
		assertEquals(selectedSequence, fileName);
		}


		@Test
		public void testLotsOfPeriodsInFileName() throws Exception {
		CharSequence fileName = "filename";
		String extension = ".jpg.zip.pdf.txt";
		String testSequence = fileName + extension;

		mTestTextView.setText(testSequence);
		mSelector.onCreateActionMode(null, null);
		mTestSelector.assertCalled();

		CharSequence selectedSequence =
		testSequence.subSequence(mTestSelector.mStart, mTestSelector.mStop);
		assertEquals(selectedSequence, fileName);
		}

		@Test
		public void testNoPeriodsInFileName() throws Exception {
		String testSequence = "filename";

		mTestTextView.setText(testSequence);
		mSelector.onCreateActionMode(null, null);
		mTestSelector.assertCalled();

		CharSequence selectedSequence =
		testSequence.subSequence(mTestSelector.mStart, mTestSelector.mStop);
		assertEquals(selectedSequence, testSequence);
		}

		private static class TestTextView extends TextView {

		public TestTextView(Context context) {
		super(context);
		}

		private String textViewString;

		public void setText(String text) {
		textViewString = text;
		}

		@Override
		public CharSequence getText() {
		return new SpannableString(textViewString);
		}
		}

		private static class TestSelector implements Selector {

		private boolean mCalled;
		private int mStart;
		private int mStop;

		public TestSelector() {
		mCalled = false;
		mStart = -1;
		mStop = -1;
		}

		@Override
		public void select(Spannable text, int start, int stop) {
		mCalled = true;
		mStart = start;
		mStop = stop;
		}

		public void assertCalled() {
		assertTrue(mCalled);
		}
		}
		}
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