Merge "Add ExpectedKeyboardBuilder for testing keyboard layouts"
Tadashi G. Takaoka
Android (Google) Code Review
commit
eba0af1237
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.keyboard.layout.expected;
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import java.util.Arrays;
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/**
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* This class builds a keyboard that is a two dimensional array of elements <code>E</code>.
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*
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* A keyboard consists of array of rows, and a row consists of array of elements. Each row may have
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* different number of elements. A element of a keyboard can be specified by a row number and a
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* column number, both numbers starts from 1.
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*
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* @param <E> the type of a keyboard element. A keyboard element must be an immutable object.
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*/
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abstract class AbstractKeyboardBuilder<E> {
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// A building array of rows.
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private final E[][] mRows;
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// Returns an instance of default element.
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abstract E defaultElement();
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// Returns an <code>E</code> array instance of the <code>size</code>.
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abstract E[] newArray(final int size);
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// Returns an <code>E[]</code> array instance of the <code>size</code>.
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abstract E[][] newArrayOfArray(final int size);
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/**
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* Construct a builder filled with the default element.
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* @param dimensions the integer array of each row's size.
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*/
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AbstractKeyboardBuilder(final int ... dimensions) {
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mRows = newArrayOfArray(dimensions.length);
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for (int rowIndex = 0; rowIndex < dimensions.length; rowIndex++) {
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mRows[rowIndex] = newArray(dimensions[rowIndex]);
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Arrays.fill(mRows[rowIndex], defaultElement());
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}
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}
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/**
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* Construct a builder from template keyboard. This builder has the same dimensions and
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* elements of <code>rows</rows>.
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* @param rows the template keyboard rows. The elements of the <code>rows</code> will be
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* shared with this builder. Therefore a element must be an immutable object.
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*/
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AbstractKeyboardBuilder(final E[][] rows) {
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mRows = newArrayOfArray(rows.length);
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for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
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final E[] row = rows[rowIndex];
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mRows[rowIndex] = Arrays.copyOf(row, row.length);
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}
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}
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/**
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* Return current constructing keyboard.
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* @return the array of the array of the element being constructed.
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*/
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E[][] build() {
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return mRows;
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}
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/**
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* Get the current contents of the specified row.
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* @param row the row number to get the contents.
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* @return the array of elements at row number <code>row</code>.
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* @throws {@link RuntimeException} if <code>row</code> is illegal.
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*/
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E[] getRowAt(final int row) {
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final int rowIndex = row - 1;
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if (rowIndex < 0 || rowIndex >= mRows.length) {
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throw new RuntimeException("Illegal row number: " + row);
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}
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return mRows[rowIndex];
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}
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/**
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* Set an array of elements to the specified row.
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* @param row the row number to set <code>elements</code>.
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* @param elements the array of elements to set at row number <code>row</code>.
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* @throws {@link RuntimeException} if <code>row</code> is illegal.
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*/
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void setRowAt(final int row, final E[] elements) {
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final int rowIndex = row - 1;
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if (rowIndex < 0 || rowIndex >= mRows.length) {
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throw new RuntimeException("Illegal row number: " + row);
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}
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mRows[rowIndex] = elements;
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}
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/**
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* Set or insert an element at specified position.
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* @param row the row number to set or insert the <code>element</code>.
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* @param column the column number to set or insert the <code>element</code>.
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* @param element the element to set or insert at <code>row,column</code>.
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* @param insert if true, the <code>element</code> is inserted at <code>row,column</code>.
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* Otherwise the <code>element</code> replace the element at <code>row,column</code>.
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* @throws {@link RuntimeException} if <code>row</code> or <code>column</code> is illegal.
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*/
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void setElementAt(final int row, final int column, final E element, final boolean insert) {
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final E[] elements = getRowAt(row);
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final int columnIndex = column - 1;
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if (insert) {
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if (columnIndex < 0 || columnIndex >= elements.length + 1) {
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throw new RuntimeException("Illegal column number: " + column);
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}
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final E[] newElements = Arrays.copyOf(elements, elements.length + 1);
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// Shift the remaining elements.
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System.arraycopy(newElements, columnIndex, newElements, columnIndex + 1,
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elements.length - columnIndex);
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// Insert the element at <code>row,column</code>.
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newElements[columnIndex] = element;
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// Replace the current row with one.
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setRowAt(row, newElements);
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return;
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}
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if (columnIndex < 0 || columnIndex >= elements.length) {
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throw new RuntimeException("Illegal column number: " + column);
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}
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elements[columnIndex] = element;
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}
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}
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@ -0,0 +1,272 @@
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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.keyboard.layout.expected;
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import java.util.Arrays;
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import java.util.Locale;
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/**
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* This class builds an expected keyboard for unit test.
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*/
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public final class ExpectedKeyboardBuilder extends AbstractKeyboardBuilder<ExpectedKey> {
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public ExpectedKeyboardBuilder(final int ... dimensions) {
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super(dimensions);
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}
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public ExpectedKeyboardBuilder(final ExpectedKey[][] rows) {
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super(rows);
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}
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@Override
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protected ExpectedKey defaultElement() {
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return ExpectedKey.EMPTY_KEY;
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}
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@Override
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ExpectedKey[] newArray(final int size) {
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return new ExpectedKey[size];
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}
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@Override
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ExpectedKey[][] newArrayOfArray(final int size) {
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return new ExpectedKey[size][];
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}
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@Override
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public ExpectedKey[][] build() {
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return super.build();
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}
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// A replacement job to be performed.
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interface ReplaceJob {
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// Returns a {@link ExpectedKey} object to replace.
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ExpectedKey replace(final ExpectedKey oldKey);
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// Return true if replacing should be stopped at first occurrence.
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boolean stopAtFirstOccurrence();
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}
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// Replace key(s) that has the specified visual.
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private void replaceKeyOf(final ExpectedKeyVisual visual, final ReplaceJob job) {
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int replacedCount = 0;
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final ExpectedKey[][] rows = build();
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for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
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final ExpectedKey[] keys = rows[rowIndex];
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for (int columnIndex = 0; columnIndex < keys.length; columnIndex++) {
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if (keys[columnIndex].getVisual().equalsTo(visual)) {
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keys[columnIndex] = job.replace(keys[columnIndex]);
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replacedCount++;
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if (job.stopAtFirstOccurrence()) {
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return;
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}
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}
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}
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}
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if (replacedCount == 0) {
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throw new RuntimeException(
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"Can't find key that has visual: " + visual + " in\n" + toString(rows));
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}
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}
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/**
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* Set the row with specified keys that have specified labels.
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* @param row the row number to set keys.
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* @param labels the label texts of the keys.
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* @return this builder.
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*/
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public ExpectedKeyboardBuilder setLabelsOfRow(final int row, final String ... labels) {
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final ExpectedKey[] keys = new ExpectedKey[labels.length];
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for (int columnIndex = 0; columnIndex < labels.length; columnIndex++) {
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keys[columnIndex] = ExpectedKey.newInstance(labels[columnIndex]);
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}
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setRowAt(row, keys);
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return this;
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}
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/**
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* Set the "more keys" of the key that has the specified label.
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* @param label the label of the key to set the "more keys".
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* @param moreKeys the array of labels of the "more keys" to be set.
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* @return this builder.
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*/
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public ExpectedKeyboardBuilder setMoreKeysOf(final String label, final String ... moreKeys) {
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final ExpectedKey[] expectedMoreKeys = new ExpectedKey[moreKeys.length];
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for (int index = 0; index < moreKeys.length; index++) {
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expectedMoreKeys[index] = ExpectedKey.newInstance(moreKeys[index]);
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}
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setMoreKeysOf(label, expectedMoreKeys);
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return this;
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}
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/**
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* Set the "more keys" of the key that has the specified label.
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* @param label the label of the key to set the "more keys".
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* @param moreKeys the array of "more key" to be set.
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* @return this builder.
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*/
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public ExpectedKeyboardBuilder setMoreKeysOf(final String label,
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final ExpectedKey ... moreKeys) {
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setMoreKeysOf(ExpectedKeyVisual.newInstance(label), moreKeys);
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return this;
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}
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/**
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* Set the "more keys" of the key that has the specified icon.
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* @param iconId the icon id of the key to set the "more keys".
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* @param moreKeys the array of "more key" to be set.
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* @return this builder.
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*/
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public ExpectedKeyboardBuilder setMoreKeysOf(final int iconId, final ExpectedKey ... moreKeys) {
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setMoreKeysOf(ExpectedKeyVisual.newInstance(iconId), moreKeys);
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return this;
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}
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private void setMoreKeysOf(final ExpectedKeyVisual visual, final ExpectedKey[] moreKeys) {
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replaceKeyOf(visual, new ReplaceJob() {
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@Override
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public ExpectedKey replace(final ExpectedKey oldKey) {
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return ExpectedKey.newInstance(oldKey.getVisual(), oldKey.getOutput(), moreKeys);
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}
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@Override
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public boolean stopAtFirstOccurrence() {
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return true;
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}
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});
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}
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/**
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* Insert the keys at specified position.
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* @param row the row number to insert the <code>keys</code>.
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* @param column the column number to insert the <code>keys</code>.
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* @param keys the array of keys to insert at <code>row,column</code>.
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* @return this builder.
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* @throws {@link RuntimeException} if <code>row</code> or <code>column</code> is illegal.
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*/
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public ExpectedKeyboardBuilder insertKeysAtRow(final int row, final int column,
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final ExpectedKey ... keys) {
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for (int index = 0; index < keys.length; index++) {
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setElementAt(row, column + index, keys[index], true /* insert */);
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}
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return this;
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}
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/**
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* Add the keys on the left most of the row.
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* @param row the row number to add the <code>keys</code>.
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* @param keys the array of keys to add on the left most of the row.
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* @return this builder.
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* @throws {@link RuntimeException} if <code>row</code> is illegal.
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*/
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public ExpectedKeyboardBuilder addKeysOnTheLeftOfRow(final int row,
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final ExpectedKey ... keys) {
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// Keys should be inserted from the last to preserve the order.
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for (int index = keys.length - 1; index >= 0; index--) {
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setElementAt(row, 1, keys[index], true /* insert */);
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}
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return this;
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}
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/**
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* Add the keys on the right most of the row.
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* @param row the row number to add the <code>keys</code>.
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* @param keys the array of keys to add on the right most of the row.
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* @return this builder.
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* @throws {@link RuntimeException} if <code>row</code> is illegal.
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*/
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public ExpectedKeyboardBuilder addKeysOnTheRightOfRow(final int row,
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final ExpectedKey ... keys) {
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final int rightEnd = getRowAt(row).length + 1;
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insertKeysAtRow(row, rightEnd, keys);
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return this;
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}
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/**
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* Replace the most top-left key that has the specified label with the new key.
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* @param label the label of the key to set <code>newKey</code>.
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* @param newKey the key to be set.
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* @return this builder.
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*/
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public ExpectedKeyboardBuilder replaceKeyOfLabel(final String label, final ExpectedKey newKey) {
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final ExpectedKeyVisual visual = ExpectedKeyVisual.newInstance(label);
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replaceKeyOf(visual, new ReplaceJob() {
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@Override
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public ExpectedKey replace(final ExpectedKey oldKey) {
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return newKey;
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}
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@Override
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public boolean stopAtFirstOccurrence() {
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return true;
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}
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});
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return this;
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}
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/**
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* Replace the all specified keys with the new key.
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* @param key the key to be replaced by <code>newKey</code>.
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* @param newKey the key to be set.
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* @return this builder.
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*/
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public ExpectedKeyboardBuilder replaceKeyOfAll(final ExpectedKey key,
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final ExpectedKey newKey) {
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replaceKeyOf(key.getVisual(), new ReplaceJob() {
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@Override
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public ExpectedKey replace(final ExpectedKey oldKey) {
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return newKey;
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}
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@Override
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public boolean stopAtFirstOccurrence() {
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return false;
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}
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});
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return this;
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}
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/**
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* Returns new keyboard instance that has upper case keys of the specified keyboard.
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* @param rows the lower case keyboard.
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* @param locale the locale used to convert cases.
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* @return the upper case keyboard.
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*/
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public static ExpectedKey[][] toUpperCase(final ExpectedKey[][] rows, final Locale locale) {
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final ExpectedKey[][] upperCaseRows = new ExpectedKey[rows.length][];
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for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
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final ExpectedKey[] lowerCaseKeys = rows[rowIndex];
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final ExpectedKey[] upperCaseKeys = new ExpectedKey[lowerCaseKeys.length];
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for (int columnIndex = 0; columnIndex < lowerCaseKeys.length; columnIndex++) {
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upperCaseKeys[columnIndex] = lowerCaseKeys[columnIndex].toUpperCase(locale);
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}
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upperCaseRows[rowIndex] = upperCaseKeys;
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}
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return upperCaseRows;
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}
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/**
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* Convert the keyboard to human readable string.
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* @param rows the keyboard to be converted to string.
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* @return the human readable representation of <code>rows</code>.
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*/
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public static String toString(final ExpectedKey[][] rows) {
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final StringBuilder sb = new StringBuilder();
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for (int rowIndex = 0; rowIndex < rows.length; rowIndex++) {
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if (rowIndex > 0) {
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sb.append("\n");
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}
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sb.append(Arrays.toString(rows[rowIndex]));
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}
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return sb.toString();
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}
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}
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