diff options
Diffstat (limited to 'java/com/android/contacts/common/format')
3 files changed, 269 insertions, 52 deletions
diff --git a/java/com/android/contacts/common/format/FormatUtils.java b/java/com/android/contacts/common/format/FormatUtils.java new file mode 100644 index 000000000..727c15b83 --- /dev/null +++ b/java/com/android/contacts/common/format/FormatUtils.java @@ -0,0 +1,181 @@ +/* + * Copyright (C) 2011 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.contacts.common.format; + +import android.database.CharArrayBuffer; +import android.graphics.Typeface; +import android.support.annotation.VisibleForTesting; +import android.text.SpannableString; +import android.text.style.StyleSpan; +import java.util.Arrays; + +/** Assorted utility methods related to text formatting in Contacts. */ +public class FormatUtils { + + /** + * Finds the earliest point in buffer1 at which the first part of buffer2 matches. For example, + * overlapPoint("abcd", "cdef") == 2. + */ + public static int overlapPoint(CharArrayBuffer buffer1, CharArrayBuffer buffer2) { + if (buffer1 == null || buffer2 == null) { + return -1; + } + return overlapPoint( + Arrays.copyOfRange(buffer1.data, 0, buffer1.sizeCopied), + Arrays.copyOfRange(buffer2.data, 0, buffer2.sizeCopied)); + } + + /** + * Finds the earliest point in string1 at which the first part of string2 matches. For example, + * overlapPoint("abcd", "cdef") == 2. + */ + @VisibleForTesting + public static int overlapPoint(String string1, String string2) { + if (string1 == null || string2 == null) { + return -1; + } + return overlapPoint(string1.toCharArray(), string2.toCharArray()); + } + + /** + * Finds the earliest point in array1 at which the first part of array2 matches. For example, + * overlapPoint("abcd", "cdef") == 2. + */ + public static int overlapPoint(char[] array1, char[] array2) { + if (array1 == null || array2 == null) { + return -1; + } + int count1 = array1.length; + int count2 = array2.length; + + // Ignore matching tails of the two arrays. + while (count1 > 0 && count2 > 0 && array1[count1 - 1] == array2[count2 - 1]) { + count1--; + count2--; + } + + int size = count2; + for (int i = 0; i < count1; i++) { + if (i + size > count1) { + size = count1 - i; + } + int j; + for (j = 0; j < size; j++) { + if (array1[i + j] != array2[j]) { + break; + } + } + if (j == size) { + return i; + } + } + + return -1; + } + + /** + * Applies the given style to a range of the input CharSequence. + * + * @param style The style to apply (see the style constants in {@link Typeface}). + * @param input The CharSequence to style. + * @param start Starting index of the range to style (will be clamped to be a minimum of 0). + * @param end Ending index of the range to style (will be clamped to a maximum of the input + * length). + * @param flags Bitmask for configuring behavior of the span. See {@link android.text.Spanned}. + * @return The styled CharSequence. + */ + public static CharSequence applyStyleToSpan( + int style, CharSequence input, int start, int end, int flags) { + // Enforce bounds of the char sequence. + start = Math.max(0, start); + end = Math.min(input.length(), end); + SpannableString text = new SpannableString(input); + text.setSpan(new StyleSpan(style), start, end, flags); + return text; + } + + @VisibleForTesting + public static void copyToCharArrayBuffer(String text, CharArrayBuffer buffer) { + if (text != null) { + char[] data = buffer.data; + if (data == null || data.length < text.length()) { + buffer.data = text.toCharArray(); + } else { + text.getChars(0, text.length(), data, 0); + } + buffer.sizeCopied = text.length(); + } else { + buffer.sizeCopied = 0; + } + } + + /** Returns a String that represents the content of the given {@link CharArrayBuffer}. */ + @VisibleForTesting + public static String charArrayBufferToString(CharArrayBuffer buffer) { + return new String(buffer.data, 0, buffer.sizeCopied); + } + + /** + * Finds the index of the first word that starts with the given prefix. + * + * <p>If not found, returns -1. + * + * @param text the text in which to search for the prefix + * @param prefix the text to find, in upper case letters + */ + public static int indexOfWordPrefix(CharSequence text, String prefix) { + if (prefix == null || text == null) { + return -1; + } + + int textLength = text.length(); + int prefixLength = prefix.length(); + + if (prefixLength == 0 || textLength < prefixLength) { + return -1; + } + + int i = 0; + while (i < textLength) { + // Skip non-word characters + while (i < textLength && !Character.isLetterOrDigit(text.charAt(i))) { + i++; + } + + if (i + prefixLength > textLength) { + return -1; + } + + // Compare the prefixes + int j; + for (j = 0; j < prefixLength; j++) { + if (Character.toUpperCase(text.charAt(i + j)) != prefix.charAt(j)) { + break; + } + } + if (j == prefixLength) { + return i; + } + + // Skip this word + while (i < textLength && Character.isLetterOrDigit(text.charAt(i))) { + i++; + } + } + + return -1; + } +} diff --git a/java/com/android/contacts/common/format/TextHighlighter.java b/java/com/android/contacts/common/format/TextHighlighter.java index f397f0429..30c03fdf3 100644 --- a/java/com/android/contacts/common/format/TextHighlighter.java +++ b/java/com/android/contacts/common/format/TextHighlighter.java @@ -24,6 +24,8 @@ import android.widget.TextView; /** Highlights the text in a text field. */ public class TextHighlighter { + private static final boolean DEBUG = false; + private final String TAG = TextHighlighter.class.getSimpleName(); private int mTextStyle; private CharacterStyle mTextStyleSpan; @@ -79,7 +81,7 @@ public class TextHighlighter { } final String trimmedPrefix = prefix.substring(prefixStart); - int index = indexOfWordPrefix(text, trimmedPrefix); + int index = FormatUtils.indexOfWordPrefix(text, trimmedPrefix); if (index != -1) { final SpannableString result = new SpannableString(text); result.setSpan(mTextStyleSpan, index, index + trimmedPrefix.length(), 0 /* flags */); @@ -88,55 +90,4 @@ public class TextHighlighter { return text; } } - - /** - * Finds the index of the first word that starts with the given prefix. - * - * <p>If not found, returns -1. - * - * @param text the text in which to search for the prefix - * @param prefix the text to find, in upper case letters - */ - public static int indexOfWordPrefix(CharSequence text, String prefix) { - if (prefix == null || text == null) { - return -1; - } - - int textLength = text.length(); - int prefixLength = prefix.length(); - - if (prefixLength == 0 || textLength < prefixLength) { - return -1; - } - - int i = 0; - while (i < textLength) { - // Skip non-word characters - while (i < textLength && !Character.isLetterOrDigit(text.charAt(i))) { - i++; - } - - if (i + prefixLength > textLength) { - return -1; - } - - // Compare the prefixes - int j; - for (j = 0; j < prefixLength; j++) { - if (Character.toUpperCase(text.charAt(i + j)) != prefix.charAt(j)) { - break; - } - } - if (j == prefixLength) { - return i; - } - - // Skip this word - while (i < textLength && Character.isLetterOrDigit(text.charAt(i))) { - i++; - } - } - - return -1; - } } diff --git a/java/com/android/contacts/common/format/testing/SpannedTestUtils.java b/java/com/android/contacts/common/format/testing/SpannedTestUtils.java new file mode 100644 index 000000000..293d9d5ad --- /dev/null +++ b/java/com/android/contacts/common/format/testing/SpannedTestUtils.java @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2011 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.contacts.common.format.testing; + +import android.test.suitebuilder.annotation.SmallTest; +import android.text.Html; +import android.text.SpannableString; +import android.text.Spanned; +import android.text.TextUtils; +import android.text.style.StyleSpan; +import android.widget.TextView; +import junit.framework.Assert; + +/** Utility class to check the value of spanned text in text views. */ +@SmallTest +public class SpannedTestUtils { + + /** + * Checks that the text contained in the text view matches the given HTML text. + * + * @param expectedHtmlText the expected text to be in the text view + * @param textView the text view from which to get the text + */ + public static void checkHtmlText(String expectedHtmlText, TextView textView) { + String actualHtmlText = Html.toHtml((Spanned) textView.getText()); + if (TextUtils.isEmpty(expectedHtmlText)) { + // If the text is empty, it does not add the <p></p> bits to it. + Assert.assertEquals("", actualHtmlText); + } else { + Assert.assertEquals("<p dir=ltr>" + expectedHtmlText + "</p>\n", actualHtmlText); + } + } + + /** + * Assert span exists in the correct location. + * + * @param seq The spannable string to check. + * @param start The starting index. + * @param end The ending index. + */ + public static void assertPrefixSpan(CharSequence seq, int start, int end) { + Assert.assertTrue(seq instanceof Spanned); + Spanned spannable = (Spanned) seq; + + if (start > 0) { + Assert.assertEquals(0, getNumForegroundColorSpansBetween(spannable, 0, start - 1)); + } + Assert.assertEquals(1, getNumForegroundColorSpansBetween(spannable, start, end)); + Assert.assertEquals( + 0, getNumForegroundColorSpansBetween(spannable, end + 1, spannable.length() - 1)); + } + + private static int getNumForegroundColorSpansBetween(Spanned value, int start, int end) { + return value.getSpans(start, end, StyleSpan.class).length; + } + + /** + * Asserts that the given character sequence is not a Spanned object and text is correct. + * + * @param seq The sequence to check. + * @param expected The expected text. + */ + public static void assertNotSpanned(CharSequence seq, String expected) { + Assert.assertFalse(seq instanceof Spanned); + Assert.assertEquals(expected, seq); + } + + public static int getNextTransition(SpannableString seq, int start) { + return seq.nextSpanTransition(start, seq.length(), StyleSpan.class); + } +} |