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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "SpellCheckClient.h"
     32 
     33 #include "MockGrammarCheck.h"
     34 #include "public/testing/WebTestDelegate.h"
     35 #include "public/web/WebTextCheckingCompletion.h"
     36 #include "public/web/WebTextCheckingResult.h"
     37 
     38 using namespace WebKit;
     39 using namespace std;
     40 
     41 namespace WebTestRunner {
     42 
     43 namespace {
     44 
     45 class HostMethodTask : public WebMethodTask<SpellCheckClient> {
     46 public:
     47     typedef void (SpellCheckClient::*CallbackMethodType)();
     48     HostMethodTask(SpellCheckClient* object, CallbackMethodType callback)
     49         : WebMethodTask<SpellCheckClient>(object)
     50         , m_callback(callback)
     51     { }
     52 
     53     virtual void runIfValid() { (m_object->*m_callback)(); }
     54 
     55 private:
     56     CallbackMethodType m_callback;
     57 };
     58 
     59 }
     60 
     61 SpellCheckClient::SpellCheckClient()
     62     : m_lastRequestedTextCheckingCompletion(0)
     63 {
     64 }
     65 
     66 SpellCheckClient::~SpellCheckClient()
     67 {
     68 }
     69 
     70 void SpellCheckClient::setDelegate(WebTestDelegate* delegate)
     71 {
     72     m_delegate = delegate;
     73 }
     74 
     75 // WebKit::WebSpellCheckClient
     76 void SpellCheckClient::spellCheck(const WebString& text, int& misspelledOffset, int& misspelledLength, WebVector<WebString>* optionalSuggestions)
     77 {
     78     // Check the spelling of the given text.
     79     m_spellcheck.spellCheckWord(text, &misspelledOffset, &misspelledLength);
     80 }
     81 
     82 void SpellCheckClient::checkTextOfParagraph(const WebString& text, WebTextCheckingTypeMask mask, WebVector<WebTextCheckingResult>* webResults)
     83 {
     84     vector<WebTextCheckingResult> results;
     85     if (mask & WebTextCheckingTypeSpelling) {
     86         size_t offset = 0;
     87         string16 data = text;
     88         while (offset < data.length()) {
     89             int misspelledPosition = 0;
     90             int misspelledLength = 0;
     91             m_spellcheck.spellCheckWord(data.substr(offset), &misspelledPosition, &misspelledLength);
     92             if (!misspelledLength)
     93                 break;
     94             WebTextCheckingResult result;
     95             result.type = WebTextCheckingTypeSpelling;
     96             result.location = offset + misspelledPosition;
     97             result.length = misspelledLength;
     98             results.push_back(result);
     99             offset += misspelledPosition + misspelledLength;
    100         }
    101     }
    102     if (mask & WebTextCheckingTypeGrammar)
    103         MockGrammarCheck::checkGrammarOfString(text, &results);
    104     webResults->assign(results);
    105 }
    106 
    107 void SpellCheckClient::requestCheckingOfText(
    108         const WebString& text,
    109         const WebVector<uint32_t>& markers,
    110         const WebVector<unsigned>& markerOffsets,
    111         WebTextCheckingCompletion* completion)
    112 {
    113     if (text.isEmpty()) {
    114         if (completion)
    115             completion->didCancelCheckingText();
    116         return;
    117     }
    118 
    119     m_lastRequestedTextCheckingCompletion = completion;
    120     m_lastRequestedTextCheckString = text;
    121     if (m_spellcheck.hasInCache(text))
    122         finishLastTextCheck();
    123     else
    124         m_delegate->postDelayedTask(new HostMethodTask(this, &SpellCheckClient::finishLastTextCheck), 0);
    125 }
    126 
    127 void SpellCheckClient::finishLastTextCheck()
    128 {
    129     if (!m_lastRequestedTextCheckingCompletion)
    130         return;
    131     vector<WebTextCheckingResult> results;
    132     int offset = 0;
    133     string16 text = m_lastRequestedTextCheckString;
    134     while (text.length()) {
    135         int misspelledPosition = 0;
    136         int misspelledLength = 0;
    137         m_spellcheck.spellCheckWord(WebString(text), &misspelledPosition, &misspelledLength);
    138         if (!misspelledLength)
    139             break;
    140         WebVector<WebString> suggestions;
    141         m_spellcheck.fillSuggestionList(WebString(text.substr(misspelledPosition, misspelledLength)), &suggestions);
    142         results.push_back(WebTextCheckingResult(WebTextCheckingTypeSpelling, offset + misspelledPosition, misspelledLength, suggestions.isEmpty() ? WebString() : suggestions[0]));
    143         text = text.substr(misspelledPosition + misspelledLength);
    144         offset += misspelledPosition + misspelledLength;
    145     }
    146     MockGrammarCheck::checkGrammarOfString(m_lastRequestedTextCheckString, &results);
    147     m_lastRequestedTextCheckingCompletion->didFinishCheckingText(results);
    148     m_lastRequestedTextCheckingCompletion = 0;
    149 }
    150 
    151 WebString SpellCheckClient::autoCorrectWord(const WebString&)
    152 {
    153     // Returns an empty string as Mac WebKit ('WebKitSupport/WebEditorClient.mm')
    154     // does. (If this function returns a non-empty string, WebKit replaces the
    155     // given misspelled string with the result one. This process executes some
    156     // editor commands and causes layout-test failures.)
    157     return WebString();
    158 }
    159 
    160 }
    161