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Side by Side Diff: Source/core/dom/Position.cpp

Issue 171773008: Rename childNodeCount() / childNode() methods for clarity (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Further renaming for consistency Created 6 years, 10 months ago
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1 /* 1 /*
2 * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved. 2 * Copyright (C) 2004, 2005, 2006, 2009 Apple 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
(...skipping 196 matching lines...) Expand 10 before | Expand all | Expand 10 after
207 if (!m_anchorNode) 207 if (!m_anchorNode)
208 return Position(); 208 return Position();
209 209
210 // FIXME: This should only be necessary for legacy positions, but is also ne eded for positions before and after Tables 210 // FIXME: This should only be necessary for legacy positions, but is also ne eded for positions before and after Tables
211 if (m_offset <= 0 && (m_anchorType != PositionIsAfterAnchor && m_anchorType != PositionIsAfterChildren)) { 211 if (m_offset <= 0 && (m_anchorType != PositionIsAfterAnchor && m_anchorType != PositionIsAfterChildren)) {
212 if (m_anchorNode->parentNode() && (editingIgnoresContent(m_anchorNode.ge t()) || isRenderedTableElement(m_anchorNode.get()))) 212 if (m_anchorNode->parentNode() && (editingIgnoresContent(m_anchorNode.ge t()) || isRenderedTableElement(m_anchorNode.get())))
213 return positionInParentBeforeNode(m_anchorNode.get()); 213 return positionInParentBeforeNode(m_anchorNode.get());
214 return Position(m_anchorNode.get(), 0, PositionIsOffsetInAnchor); 214 return Position(m_anchorNode.get(), 0, PositionIsOffsetInAnchor);
215 } 215 }
216 if (!m_anchorNode->offsetInCharacters() 216 if (!m_anchorNode->offsetInCharacters()
217 && (m_anchorType == PositionIsAfterAnchor || m_anchorType == PositionIsA fterChildren || static_cast<unsigned>(m_offset) == m_anchorNode->childNodeCount( )) 217 && (m_anchorType == PositionIsAfterAnchor || m_anchorType == PositionIsA fterChildren || static_cast<unsigned>(m_offset) == m_anchorNode->countChildren() )
218 && (editingIgnoresContent(m_anchorNode.get()) || isRenderedTableElement( m_anchorNode.get())) 218 && (editingIgnoresContent(m_anchorNode.get()) || isRenderedTableElement( m_anchorNode.get()))
219 && containerNode()) { 219 && containerNode()) {
220 return positionInParentAfterNode(m_anchorNode.get()); 220 return positionInParentAfterNode(m_anchorNode.get());
221 } 221 }
222 222
223 return Position(containerNode(), computeOffsetInContainerNode(), PositionIsO ffsetInAnchor); 223 return Position(containerNode(), computeOffsetInContainerNode(), PositionIsO ffsetInAnchor);
224 } 224 }
225 225
226 Node* Position::computeNodeBeforePosition() const 226 Node* Position::computeNodeBeforePosition() const
227 { 227 {
228 if (!m_anchorNode) 228 if (!m_anchorNode)
229 return 0; 229 return 0;
230 230
231 switch (anchorType()) { 231 switch (anchorType()) {
232 case PositionIsBeforeChildren: 232 case PositionIsBeforeChildren:
233 return 0; 233 return 0;
234 case PositionIsAfterChildren: 234 case PositionIsAfterChildren:
235 return m_anchorNode->lastChild(); 235 return m_anchorNode->lastChild();
236 case PositionIsOffsetInAnchor: 236 case PositionIsOffsetInAnchor:
237 return m_anchorNode->childNode(m_offset - 1); // -1 converts to childNod e((unsigned)-1) and returns null. 237 return m_anchorNode->traverseToChildAt(m_offset - 1); // -1 converts to traverseToChildAt((unsigned)-1) and returns null.
238 case PositionIsBeforeAnchor: 238 case PositionIsBeforeAnchor:
239 return m_anchorNode->previousSibling(); 239 return m_anchorNode->previousSibling();
240 case PositionIsAfterAnchor: 240 case PositionIsAfterAnchor:
241 return m_anchorNode.get(); 241 return m_anchorNode.get();
242 } 242 }
243 ASSERT_NOT_REACHED(); 243 ASSERT_NOT_REACHED();
244 return 0; 244 return 0;
245 } 245 }
246 246
247 Node* Position::computeNodeAfterPosition() const 247 Node* Position::computeNodeAfterPosition() const
248 { 248 {
249 if (!m_anchorNode) 249 if (!m_anchorNode)
250 return 0; 250 return 0;
251 251
252 switch (anchorType()) { 252 switch (anchorType()) {
253 case PositionIsBeforeChildren: 253 case PositionIsBeforeChildren:
254 return m_anchorNode->firstChild(); 254 return m_anchorNode->firstChild();
255 case PositionIsAfterChildren: 255 case PositionIsAfterChildren:
256 return 0; 256 return 0;
257 case PositionIsOffsetInAnchor: 257 case PositionIsOffsetInAnchor:
258 return m_anchorNode->childNode(m_offset); 258 return m_anchorNode->traverseToChildAt(m_offset);
259 case PositionIsBeforeAnchor: 259 case PositionIsBeforeAnchor:
260 return m_anchorNode.get(); 260 return m_anchorNode.get();
261 case PositionIsAfterAnchor: 261 case PositionIsAfterAnchor:
262 return m_anchorNode->nextSibling(); 262 return m_anchorNode->nextSibling();
263 } 263 }
264 ASSERT_NOT_REACHED(); 264 ASSERT_NOT_REACHED();
265 return 0; 265 return 0;
266 } 266 }
267 267
268 Position::AnchorType Position::anchorTypeForLegacyEditingPosition(Node* anchorNo de, int offset) 268 Position::AnchorType Position::anchorTypeForLegacyEditingPosition(Node* anchorNo de, int offset)
(...skipping 27 matching lines...) Expand all
296 { 296 {
297 Node* node = deprecatedNode(); 297 Node* node = deprecatedNode();
298 if (!node) 298 if (!node)
299 return *this; 299 return *this;
300 300
301 int offset = deprecatedEditingOffset(); 301 int offset = deprecatedEditingOffset();
302 // FIXME: Negative offsets shouldn't be allowed. We should catch this earlie r. 302 // FIXME: Negative offsets shouldn't be allowed. We should catch this earlie r.
303 ASSERT(offset >= 0); 303 ASSERT(offset >= 0);
304 304
305 if (offset > 0) { 305 if (offset > 0) {
306 if (Node* child = node->childNode(offset - 1)) 306 if (Node* child = node->traverseToChildAt(offset - 1))
307 return lastPositionInOrAfterNode(child); 307 return lastPositionInOrAfterNode(child);
308 308
309 // There are two reasons child might be 0: 309 // There are two reasons child might be 0:
310 // 1) The node is node like a text node that is not an element, and th erefore has no children. 310 // 1) The node is node like a text node that is not an element, and th erefore has no children.
311 // Going backward one character at a time is correct. 311 // Going backward one character at a time is correct.
312 // 2) The old offset was a bogus offset like (<br>, 1), and there is n o child. 312 // 2) The old offset was a bogus offset like (<br>, 1), and there is n o child.
313 // Going from 1 to 0 is correct. 313 // Going from 1 to 0 is correct.
314 switch (moveType) { 314 switch (moveType) {
315 case CodePoint: 315 case CodePoint:
316 return createLegacyEditingPosition(node, offset - 1); 316 return createLegacyEditingPosition(node, offset - 1);
(...skipping 14 matching lines...) Expand all
331 ASSERT(moveType != BackwardDeletion); 331 ASSERT(moveType != BackwardDeletion);
332 332
333 Node* node = deprecatedNode(); 333 Node* node = deprecatedNode();
334 if (!node) 334 if (!node)
335 return *this; 335 return *this;
336 336
337 int offset = deprecatedEditingOffset(); 337 int offset = deprecatedEditingOffset();
338 // FIXME: Negative offsets shouldn't be allowed. We should catch this earlie r. 338 // FIXME: Negative offsets shouldn't be allowed. We should catch this earlie r.
339 ASSERT(offset >= 0); 339 ASSERT(offset >= 0);
340 340
341 if (Node* child = node->childNode(offset)) 341 if (Node* child = node->traverseToChildAt(offset))
342 return firstPositionInOrBeforeNode(child); 342 return firstPositionInOrBeforeNode(child);
343 343
344 if (!node->hasChildNodes() && offset < lastOffsetForEditing(node)) { 344 if (!node->hasChildren() && offset < lastOffsetForEditing(node)) {
345 // There are two reasons child might be 0: 345 // There are two reasons child might be 0:
346 // 1) The node is node like a text node that is not an element, and th erefore has no children. 346 // 1) The node is node like a text node that is not an element, and th erefore has no children.
347 // Going forward one character at a time is correct. 347 // Going forward one character at a time is correct.
348 // 2) The new offset is a bogus offset like (<br>, 1), and there is no child. 348 // 2) The new offset is a bogus offset like (<br>, 1), and there is no child.
349 // Going from 0 to 1 is correct. 349 // Going from 0 to 1 is correct.
350 return createLegacyEditingPosition(node, (moveType == Character) ? unche ckedNextOffset(node, offset) : offset + 1); 350 return createLegacyEditingPosition(node, (moveType == Character) ? unche ckedNextOffset(node, offset) : offset + 1);
351 } 351 }
352 352
353 if (ContainerNode* parent = node->parentNode()) 353 if (ContainerNode* parent = node->parentNode())
354 return createLegacyEditingPosition(parent, node->nodeIndex() + 1); 354 return createLegacyEditingPosition(parent, node->nodeIndex() + 1);
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1382 pos.showTreeForThis(); 1382 pos.showTreeForThis();
1383 } 1383 }
1384 1384
1385 void showTree(const WebCore::Position* pos) 1385 void showTree(const WebCore::Position* pos)
1386 { 1386 {
1387 if (pos) 1387 if (pos)
1388 pos->showTreeForThis(); 1388 pos->showTreeForThis();
1389 } 1389 }
1390 1390
1391 #endif 1391 #endif
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