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| 1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "core/editing/commands/InsertIncrementalTextCommand.h" | 5 #include "core/editing/commands/InsertIncrementalTextCommand.h" |
| 6 | 6 |
| 7 #include "core/dom/Document.h" | 7 #include "core/dom/Document.h" |
| 8 #include "core/dom/Element.h" | 8 #include "core/dom/Element.h" |
| 9 #include "core/dom/Text.h" | 9 #include "core/dom/Text.h" |
| 10 #include "core/editing/EditingUtilities.h" | 10 #include "core/editing/EditingUtilities.h" |
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| 130 const String& text, | 130 const String& text, |
| 131 bool select_inserted_text, | 131 bool select_inserted_text, |
| 132 RebalanceType rebalance_type) | 132 RebalanceType rebalance_type) |
| 133 : InsertTextCommand(document, text, select_inserted_text, rebalance_type) {} | 133 : InsertTextCommand(document, text, select_inserted_text, rebalance_type) {} |
| 134 | 134 |
| 135 void InsertIncrementalTextCommand::DoApply(EditingState* editing_state) { | 135 void InsertIncrementalTextCommand::DoApply(EditingState* editing_state) { |
| 136 const Element* element = EndingSelection().RootEditableElement(); | 136 const Element* element = EndingSelection().RootEditableElement(); |
| 137 DCHECK(element); | 137 DCHECK(element); |
| 138 | 138 |
| 139 const EphemeralRange selection_range(EndingSelection().Start(), | 139 const EphemeralRange selection_range(EndingSelection().Start(), |
| 140 EndingSelection().end()); | 140 EndingSelection().End()); |
| 141 const String old_text = PlainText(selection_range); | 141 const String old_text = PlainText(selection_range); |
| 142 const String& new_text = text_; | 142 const String& new_text = text_; |
| 143 | 143 |
| 144 const Position& selection_start = EndingSelection().Start(); | 144 const Position& selection_start = EndingSelection().Start(); |
| 145 const size_t new_text_length = new_text.length(); | 145 const size_t new_text_length = new_text.length(); |
| 146 const size_t old_text_length = old_text.length(); | 146 const size_t old_text_length = old_text.length(); |
| 147 const size_t common_prefix_length = ComputeCommonGraphemeClusterPrefixLength( | 147 const size_t common_prefix_length = ComputeCommonGraphemeClusterPrefixLength( |
| 148 selection_start, old_text, new_text); | 148 selection_start, old_text, new_text); |
| 149 // We should ignore common prefix when finding common suffix. | 149 // We should ignore common prefix when finding common suffix. |
| 150 const size_t common_suffix_length = ComputeCommonGraphemeClusterSuffixLength( | 150 const size_t common_suffix_length = ComputeCommonGraphemeClusterSuffixLength( |
| 151 selection_start, old_text.Right(old_text_length - common_prefix_length), | 151 selection_start, old_text.Right(old_text_length - common_prefix_length), |
| 152 new_text.Right(new_text_length - common_prefix_length)); | 152 new_text.Right(new_text_length - common_prefix_length)); |
| 153 DCHECK_GE(old_text_length, common_prefix_length + common_suffix_length); | 153 DCHECK_GE(old_text_length, common_prefix_length + common_suffix_length); |
| 154 | 154 |
| 155 text_ = ComputeTextForInsertion(text_, common_prefix_length, | 155 text_ = ComputeTextForInsertion(text_, common_prefix_length, |
| 156 common_suffix_length); | 156 common_suffix_length); |
| 157 | 157 |
| 158 const int offset = static_cast<int>(common_prefix_length); | 158 const int offset = static_cast<int>(common_prefix_length); |
| 159 const int length = static_cast<int>(old_text_length - common_prefix_length - | 159 const int length = static_cast<int>(old_text_length - common_prefix_length - |
| 160 common_suffix_length); | 160 common_suffix_length); |
| 161 const VisibleSelection& selection_for_insertion = | 161 const VisibleSelection& selection_for_insertion = |
| 162 ComputeSelectionForInsertion(selection_range, offset, length, | 162 ComputeSelectionForInsertion(selection_range, offset, length, |
| 163 EndingSelection().IsDirectional()); | 163 EndingSelection().IsDirectional()); |
| 164 | 164 |
| 165 SetEndingSelectionWithoutValidation(selection_for_insertion.Start(), | 165 SetEndingSelectionWithoutValidation(selection_for_insertion.Start(), |
| 166 selection_for_insertion.end()); | 166 selection_for_insertion.End()); |
| 167 | 167 |
| 168 InsertTextCommand::DoApply(editing_state); | 168 InsertTextCommand::DoApply(editing_state); |
| 169 } | 169 } |
| 170 | 170 |
| 171 } // namespace blink | 171 } // namespace blink |
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