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| 1 /* | 1 /* |
| 2 * Copyright (C) 2005 Apple Computer, Inc. All rights reserved. | 2 * Copyright (C) 2005 Apple Computer, Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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| 88 // This is a scenario that should never happen, but we want to | 88 // This is a scenario that should never happen, but we want to |
| 89 // make sure we don't dereference a null pointer below. | 89 // make sure we don't dereference a null pointer below. |
| 90 | 90 |
| 91 DCHECK(!endingSelection().isNone()); | 91 DCHECK(!endingSelection().isNone()); |
| 92 | 92 |
| 93 if (endingSelection().isNone()) | 93 if (endingSelection().isNone()) |
| 94 return; | 94 return; |
| 95 | 95 |
| 96 VisiblePosition visiblePos = endingSelection().visibleStartDeprecated(); | 96 VisiblePosition visiblePos = endingSelection().visibleStartDeprecated(); |
| 97 | 97 |
| 98 // pos is a position equivalent to the caret. We use downstream() so that pos
will | 98 // pos is a position equivalent to the caret. We use downstream() so that pos |
| 99 // be in the first node that we need to move (there are a few exceptions to th
is, see below). | 99 // will be in the first node that we need to move (there are a few exceptions |
| 100 // to this, see below). |
| 100 Position pos = mostForwardCaretPosition(endingSelection().start()); | 101 Position pos = mostForwardCaretPosition(endingSelection().start()); |
| 101 | 102 |
| 102 // Find the top-most blockquote from the start. | 103 // Find the top-most blockquote from the start. |
| 103 HTMLQuoteElement* topBlockquote = toHTMLQuoteElement( | 104 HTMLQuoteElement* topBlockquote = toHTMLQuoteElement( |
| 104 highestEnclosingNodeOfType(pos, isMailHTMLBlockquoteElement)); | 105 highestEnclosingNodeOfType(pos, isMailHTMLBlockquoteElement)); |
| 105 if (!topBlockquote || !topBlockquote->parentNode()) | 106 if (!topBlockquote || !topBlockquote->parentNode()) |
| 106 return; | 107 return; |
| 107 | 108 |
| 108 HTMLBRElement* breakElement = HTMLBRElement::create(document()); | 109 HTMLBRElement* breakElement = HTMLBRElement::create(document()); |
| 109 | 110 |
| 110 bool isLastVisPosInNode = | 111 bool isLastVisPosInNode = |
| 111 isLastVisiblePositionInNode(visiblePos, topBlockquote); | 112 isLastVisiblePositionInNode(visiblePos, topBlockquote); |
| 112 | 113 |
| 113 // If the position is at the beginning of the top quoted content, we don't nee
d to break the quote. | 114 // If the position is at the beginning of the top quoted content, we don't |
| 114 // Instead, insert the break before the blockquote, unless the position is as
the end of the the quoted content. | 115 // need to break the quote. Instead, insert the break before the blockquote, |
| 116 // unless the position is as the end of the the quoted content. |
| 115 if (isFirstVisiblePositionInNode(visiblePos, topBlockquote) && | 117 if (isFirstVisiblePositionInNode(visiblePos, topBlockquote) && |
| 116 !isLastVisPosInNode) { | 118 !isLastVisPosInNode) { |
| 117 insertNodeBefore(breakElement, topBlockquote, editingState); | 119 insertNodeBefore(breakElement, topBlockquote, editingState); |
| 118 if (editingState->isAborted()) | 120 if (editingState->isAborted()) |
| 119 return; | 121 return; |
| 120 setEndingSelection(createVisibleSelectionDeprecated( | 122 setEndingSelection(createVisibleSelectionDeprecated( |
| 121 Position::beforeNode(breakElement), TextAffinity::Downstream, | 123 Position::beforeNode(breakElement), TextAffinity::Downstream, |
| 122 endingSelection().isDirectional())); | 124 endingSelection().isDirectional())); |
| 123 rebalanceWhitespace(); | 125 rebalanceWhitespace(); |
| 124 return; | 126 return; |
| 125 } | 127 } |
| 126 | 128 |
| 127 // Insert a break after the top blockquote. | 129 // Insert a break after the top blockquote. |
| 128 insertNodeAfter(breakElement, topBlockquote, editingState); | 130 insertNodeAfter(breakElement, topBlockquote, editingState); |
| 129 if (editingState->isAborted()) | 131 if (editingState->isAborted()) |
| 130 return; | 132 return; |
| 131 | 133 |
| 132 // If we're inserting the break at the end of the quoted content, we don't nee
d to break the quote. | 134 // If we're inserting the break at the end of the quoted content, we don't |
| 135 // need to break the quote. |
| 133 if (isLastVisPosInNode) { | 136 if (isLastVisPosInNode) { |
| 134 setEndingSelection(createVisibleSelectionDeprecated( | 137 setEndingSelection(createVisibleSelectionDeprecated( |
| 135 Position::beforeNode(breakElement), TextAffinity::Downstream, | 138 Position::beforeNode(breakElement), TextAffinity::Downstream, |
| 136 endingSelection().isDirectional())); | 139 endingSelection().isDirectional())); |
| 137 rebalanceWhitespace(); | 140 rebalanceWhitespace(); |
| 138 return; | 141 return; |
| 139 } | 142 } |
| 140 | 143 |
| 141 // Don't move a line break just after the caret. Doing so would create an ext
ra, empty paragraph | 144 // Don't move a line break just after the caret. Doing so would create an |
| 142 // in the new blockquote. | 145 // extra, empty paragraph in the new blockquote. |
| 143 if (lineBreakExistsAtVisiblePosition(visiblePos)) { | 146 if (lineBreakExistsAtVisiblePosition(visiblePos)) { |
| 144 pos = nextPositionOf(pos, PositionMoveType::GraphemeCluster); | 147 pos = nextPositionOf(pos, PositionMoveType::GraphemeCluster); |
| 145 } | 148 } |
| 146 | 149 |
| 147 // Adjust the position so we don't split at the beginning of a quote. | 150 // Adjust the position so we don't split at the beginning of a quote. |
| 148 while (isFirstVisiblePositionInNode(createVisiblePositionDeprecated(pos), | 151 while (isFirstVisiblePositionInNode(createVisiblePositionDeprecated(pos), |
| 149 toHTMLQuoteElement(enclosingNodeOfType( | 152 toHTMLQuoteElement(enclosingNodeOfType( |
| 150 pos, isMailHTMLBlockquoteElement)))) { | 153 pos, isMailHTMLBlockquoteElement)))) { |
| 151 pos = previousPositionOf(pos, PositionMoveType::GraphemeCluster); | 154 pos = previousPositionOf(pos, PositionMoveType::GraphemeCluster); |
| 152 } | 155 } |
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| 173 } | 176 } |
| 174 | 177 |
| 175 // If there's nothing inside topBlockquote to move, we're finished. | 178 // If there's nothing inside topBlockquote to move, we're finished. |
| 176 if (!startNode->isDescendantOf(topBlockquote)) { | 179 if (!startNode->isDescendantOf(topBlockquote)) { |
| 177 setEndingSelection(createVisibleSelectionDeprecated( | 180 setEndingSelection(createVisibleSelectionDeprecated( |
| 178 createVisiblePositionDeprecated(firstPositionInOrBeforeNode(startNode)), | 181 createVisiblePositionDeprecated(firstPositionInOrBeforeNode(startNode)), |
| 179 endingSelection().isDirectional())); | 182 endingSelection().isDirectional())); |
| 180 return; | 183 return; |
| 181 } | 184 } |
| 182 | 185 |
| 183 // Build up list of ancestors in between the start node and the top blockquote
. | 186 // Build up list of ancestors in between the start node and the top |
| 187 // blockquote. |
| 184 HeapVector<Member<Element>> ancestors; | 188 HeapVector<Member<Element>> ancestors; |
| 185 for (Element* node = startNode->parentElement(); | 189 for (Element* node = startNode->parentElement(); |
| 186 node && node != topBlockquote; node = node->parentElement()) | 190 node && node != topBlockquote; node = node->parentElement()) |
| 187 ancestors.append(node); | 191 ancestors.append(node); |
| 188 | 192 |
| 189 // Insert a clone of the top blockquote after the break. | 193 // Insert a clone of the top blockquote after the break. |
| 190 Element* clonedBlockquote = topBlockquote->cloneElementWithoutChildren(); | 194 Element* clonedBlockquote = topBlockquote->cloneElementWithoutChildren(); |
| 191 insertNodeAfter(clonedBlockquote, breakElement, editingState); | 195 insertNodeAfter(clonedBlockquote, breakElement, editingState); |
| 192 if (editingState->isAborted()) | 196 if (editingState->isAborted()) |
| 193 return; | 197 return; |
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| 256 return; | 260 return; |
| 257 | 261 |
| 258 // Put the selection right before the break. | 262 // Put the selection right before the break. |
| 259 setEndingSelection(createVisibleSelectionDeprecated( | 263 setEndingSelection(createVisibleSelectionDeprecated( |
| 260 Position::beforeNode(breakElement), TextAffinity::Downstream, | 264 Position::beforeNode(breakElement), TextAffinity::Downstream, |
| 261 endingSelection().isDirectional())); | 265 endingSelection().isDirectional())); |
| 262 rebalanceWhitespace(); | 266 rebalanceWhitespace(); |
| 263 } | 267 } |
| 264 | 268 |
| 265 } // namespace blink | 269 } // namespace blink |
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