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

Issue 899163003: Move rendering/RenderObject to layout/LayoutObject. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 5 years, 10 months ago
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1 /* 1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) 3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2007 David Smith (catfish.man@gmail.com) 4 * (C) 2007 David Smith (catfish.man@gmail.com)
5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved. 5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
6 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 6 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
7 * 7 *
8 * This library is free software; you can redistribute it and/or 8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public 9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either 10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version. 11 * version 2 of the License, or (at your option) any later version.
12 * 12 *
13 * This library is distributed in the hope that it will be useful, 13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details. 16 * Library General Public License for more details.
17 * 17 *
18 * You should have received a copy of the GNU Library General Public License 18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to 19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA. 21 * Boston, MA 02110-1301, USA.
22 */ 22 */
23 23
24 #include "config.h" 24 #include "config.h"
25 #include "core/dom/FirstLetterPseudoElement.h" 25 #include "core/dom/FirstLetterPseudoElement.h"
26 26
27 #include "core/dom/Element.h" 27 #include "core/dom/Element.h"
28 #include "core/rendering/RenderObject.h" 28 #include "core/layout/LayoutObject.h"
29 #include "core/rendering/RenderObjectInlines.h" 29 #include "core/layout/LayoutObjectInlines.h"
30 #include "core/rendering/RenderText.h" 30 #include "core/rendering/RenderText.h"
31 #include "core/rendering/RenderTextFragment.h" 31 #include "core/rendering/RenderTextFragment.h"
32 #include "wtf/TemporaryChange.h" 32 #include "wtf/TemporaryChange.h"
33 #include "wtf/text/WTFString.h" 33 #include "wtf/text/WTFString.h"
34 #include "wtf/unicode/icu/UnicodeIcu.h" 34 #include "wtf/unicode/icu/UnicodeIcu.h"
35 35
36 namespace blink { 36 namespace blink {
37 37
38 using namespace WTF; 38 using namespace WTF;
39 using namespace Unicode; 39 using namespace Unicode;
(...skipping 42 matching lines...) Expand 10 before | Expand all | Expand 10 after
82 for (; length < textLength; ++length) { 82 for (; length < textLength; ++length) {
83 UChar c = text[length]; 83 UChar c = text[length];
84 if (!isPunctuationForFirstLetter(c)) 84 if (!isPunctuationForFirstLetter(c))
85 break; 85 break;
86 } 86 }
87 return length; 87 return length;
88 } 88 }
89 89
90 // Once we see any of these renderers we can stop looking for first-letter as 90 // Once we see any of these renderers we can stop looking for first-letter as
91 // they signal the end of the first line of text. 91 // they signal the end of the first line of text.
92 static bool isInvalidFirstLetterRenderer(const RenderObject* obj) 92 static bool isInvalidFirstLetterRenderer(const LayoutObject* obj)
93 { 93 {
94 return (obj->isBR() || (obj->isText() && toRenderText(obj)->isWordBreak())); 94 return (obj->isBR() || (obj->isText() && toRenderText(obj)->isWordBreak()));
95 } 95 }
96 96
97 RenderObject* FirstLetterPseudoElement::firstLetterTextRenderer(const Element& e lement) 97 LayoutObject* FirstLetterPseudoElement::firstLetterTextRenderer(const Element& e lement)
98 { 98 {
99 RenderObject* parentRenderer = 0; 99 LayoutObject* parentRenderer = 0;
100 100
101 // If we are looking at a first letter element then we need to find the 101 // If we are looking at a first letter element then we need to find the
102 // first letter text renderer from the parent node, and not ourselves. 102 // first letter text renderer from the parent node, and not ourselves.
103 if (element.isFirstLetterPseudoElement()) 103 if (element.isFirstLetterPseudoElement())
104 parentRenderer = element.parentOrShadowHostElement()->renderer(); 104 parentRenderer = element.parentOrShadowHostElement()->renderer();
105 else 105 else
106 parentRenderer = element.renderer(); 106 parentRenderer = element.renderer();
107 107
108 if (!parentRenderer 108 if (!parentRenderer
109 || !parentRenderer->style()->hasPseudoStyle(FIRST_LETTER) 109 || !parentRenderer->style()->hasPseudoStyle(FIRST_LETTER)
110 || !parentRenderer->canHaveGeneratedChildren() 110 || !parentRenderer->canHaveGeneratedChildren()
111 || !(parentRenderer->isRenderBlockFlow() || parentRenderer->isRenderButt on())) 111 || !(parentRenderer->isRenderBlockFlow() || parentRenderer->isRenderButt on()))
112 return nullptr; 112 return nullptr;
113 113
114 // Drill down into our children and look for our first text child. 114 // Drill down into our children and look for our first text child.
115 RenderObject* firstLetterTextRenderer = parentRenderer->slowFirstChild(); 115 LayoutObject* firstLetterTextRenderer = parentRenderer->slowFirstChild();
116 while (firstLetterTextRenderer) { 116 while (firstLetterTextRenderer) {
117 // This can be called when the first letter renderer is already in the t ree. We do not 117 // This can be called when the first letter renderer is already in the t ree. We do not
118 // want to consider that renderer for our text renderer so we go to the sibling (which is 118 // want to consider that renderer for our text renderer so we go to the sibling (which is
119 // the RenderTextFragment for the remaining text). 119 // the RenderTextFragment for the remaining text).
120 if (firstLetterTextRenderer->style() && firstLetterTextRenderer->style() ->styleType() == FIRST_LETTER) { 120 if (firstLetterTextRenderer->style() && firstLetterTextRenderer->style() ->styleType() == FIRST_LETTER) {
121 firstLetterTextRenderer = firstLetterTextRenderer->nextSibling(); 121 firstLetterTextRenderer = firstLetterTextRenderer->nextSibling();
122 } else if (firstLetterTextRenderer->isText()) { 122 } else if (firstLetterTextRenderer->isText()) {
123 // FIXME: If there is leading punctuation in a different RenderText than 123 // FIXME: If there is leading punctuation in a different RenderText than
124 // the first letter, we'll not apply the correct style to it. 124 // the first letter, we'll not apply the correct style to it.
125 RefPtr<StringImpl> str = toRenderText(firstLetterTextRenderer)->isTe xtFragment() ? 125 RefPtr<StringImpl> str = toRenderText(firstLetterTextRenderer)->isTe xtFragment() ?
(...skipping 91 matching lines...) Expand 10 before | Expand all | Expand 10 after
217 m_remainingTextRenderer->setTextFragment(textNode->dataImpl(), 0, te xtNode->dataImpl()->length()); 217 m_remainingTextRenderer->setTextFragment(textNode->dataImpl(), 0, te xtNode->dataImpl()->length());
218 } 218 }
219 m_remainingTextRenderer->setFirstLetterPseudoElement(nullptr); 219 m_remainingTextRenderer->setFirstLetterPseudoElement(nullptr);
220 m_remainingTextRenderer->setIsRemainingTextRenderer(false); 220 m_remainingTextRenderer->setIsRemainingTextRenderer(false);
221 } 221 }
222 m_remainingTextRenderer = nullptr; 222 m_remainingTextRenderer = nullptr;
223 223
224 PseudoElement::detach(context); 224 PseudoElement::detach(context);
225 } 225 }
226 226
227 RenderStyle* FirstLetterPseudoElement::styleForFirstLetter(RenderObject* rendere rContainer) 227 RenderStyle* FirstLetterPseudoElement::styleForFirstLetter(LayoutObject* rendere rContainer)
228 { 228 {
229 ASSERT(rendererContainer); 229 ASSERT(rendererContainer);
230 230
231 RenderObject* styleContainer = parentOrShadowHostElement()->renderer(); 231 LayoutObject* styleContainer = parentOrShadowHostElement()->renderer();
232 ASSERT(styleContainer); 232 ASSERT(styleContainer);
233 233
234 // We always force the pseudo style to recompute as the first-letter style 234 // We always force the pseudo style to recompute as the first-letter style
235 // computed by the style container may not have taken the renderers styles 235 // computed by the style container may not have taken the renderers styles
236 // into account. 236 // into account.
237 styleContainer->style()->removeCachedPseudoStyle(FIRST_LETTER); 237 styleContainer->style()->removeCachedPseudoStyle(FIRST_LETTER);
238 238
239 RenderStyle* pseudoStyle = styleContainer->getCachedPseudoStyle(FIRST_LETTER , rendererContainer->firstLineStyle()); 239 RenderStyle* pseudoStyle = styleContainer->getCachedPseudoStyle(FIRST_LETTER , rendererContainer->firstLineStyle());
240 ASSERT(pseudoStyle); 240 ASSERT(pseudoStyle);
241 241
242 return pseudoStyle; 242 return pseudoStyle;
243 } 243 }
244 244
245 void FirstLetterPseudoElement::attachFirstLetterTextRenderers() 245 void FirstLetterPseudoElement::attachFirstLetterTextRenderers()
246 { 246 {
247 RenderObject* nextRenderer = FirstLetterPseudoElement::firstLetterTextRender er(*this); 247 LayoutObject* nextRenderer = FirstLetterPseudoElement::firstLetterTextRender er(*this);
248 ASSERT(nextRenderer); 248 ASSERT(nextRenderer);
249 ASSERT(nextRenderer->isText()); 249 ASSERT(nextRenderer->isText());
250 250
251 // The original string is going to be either a generated content string or a DOM node's 251 // The original string is going to be either a generated content string or a DOM node's
252 // string. We want the original string before it got transformed in case fir st-letter has 252 // string. We want the original string before it got transformed in case fir st-letter has
253 // no text-transform or a different text-transform applied to it. 253 // no text-transform or a different text-transform applied to it.
254 String oldText = toRenderText(nextRenderer)->isTextFragment() ? toRenderText Fragment(nextRenderer)->completeText() : toRenderText(nextRenderer)->originalTex t(); 254 String oldText = toRenderText(nextRenderer)->isTextFragment() ? toRenderText Fragment(nextRenderer)->completeText() : toRenderText(nextRenderer)->originalTex t();
255 ASSERT(oldText.impl()); 255 ASSERT(oldText.impl());
256 256
257 RenderStyle* pseudoStyle = styleForFirstLetter(nextRenderer->parent()); 257 RenderStyle* pseudoStyle = styleForFirstLetter(nextRenderer->parent());
258 renderer()->setStyle(pseudoStyle); 258 renderer()->setStyle(pseudoStyle);
259 259
260 // FIXME: This would already have been calculated in firstLetterRenderer. Ca n we pass the length through? 260 // FIXME: This would already have been calculated in firstLetterRenderer. Ca n we pass the length through?
261 unsigned length = FirstLetterPseudoElement::firstLetterLength(oldText); 261 unsigned length = FirstLetterPseudoElement::firstLetterLength(oldText);
262 262
263 // Construct a text fragment for the text after the first letter. 263 // Construct a text fragment for the text after the first letter.
264 // This text fragment might be empty. 264 // This text fragment might be empty.
265 RenderTextFragment* remainingText = 265 RenderTextFragment* remainingText =
266 new RenderTextFragment(nextRenderer->node() ? nextRenderer->node() : &ne xtRenderer->document(), oldText.impl(), length, oldText.length() - length); 266 new RenderTextFragment(nextRenderer->node() ? nextRenderer->node() : &ne xtRenderer->document(), oldText.impl(), length, oldText.length() - length);
267 remainingText->setFirstLetterPseudoElement(this); 267 remainingText->setFirstLetterPseudoElement(this);
268 remainingText->setIsRemainingTextRenderer(true); 268 remainingText->setIsRemainingTextRenderer(true);
269 remainingText->setStyle(nextRenderer->style()); 269 remainingText->setStyle(nextRenderer->style());
270 270
271 if (remainingText->node()) 271 if (remainingText->node())
272 remainingText->node()->setRenderer(remainingText); 272 remainingText->node()->setRenderer(remainingText);
273 273
274 m_remainingTextRenderer = remainingText; 274 m_remainingTextRenderer = remainingText;
275 275
276 RenderObject* nextSibling = renderer()->nextSibling(); 276 LayoutObject* nextSibling = renderer()->nextSibling();
277 renderer()->parent()->addChild(remainingText, nextSibling); 277 renderer()->parent()->addChild(remainingText, nextSibling);
278 278
279 // Construct text fragment for the first letter. 279 // Construct text fragment for the first letter.
280 RenderTextFragment* letter = new RenderTextFragment(&nextRenderer->document( ), oldText.impl(), 0, length); 280 RenderTextFragment* letter = new RenderTextFragment(&nextRenderer->document( ), oldText.impl(), 0, length);
281 letter->setFirstLetterPseudoElement(this); 281 letter->setFirstLetterPseudoElement(this);
282 letter->setStyle(pseudoStyle); 282 letter->setStyle(pseudoStyle);
283 renderer()->addChild(letter); 283 renderer()->addChild(letter);
284 284
285 nextRenderer->destroy(); 285 nextRenderer->destroy();
286 } 286 }
287 287
288 void FirstLetterPseudoElement::didRecalcStyle(StyleRecalcChange) 288 void FirstLetterPseudoElement::didRecalcStyle(StyleRecalcChange)
289 { 289 {
290 if (!renderer()) 290 if (!renderer())
291 return; 291 return;
292 292
293 // The renderers inside pseudo elements are anonymous so they don't get noti fied of recalcStyle and must have 293 // The renderers inside pseudo elements are anonymous so they don't get noti fied of recalcStyle and must have
294 // the style propagated downward manually similar to RenderObject::propagate StyleToAnonymousChildren. 294 // the style propagated downward manually similar to LayoutObject::propagate StyleToAnonymousChildren.
295 RenderObject* renderer = this->renderer(); 295 LayoutObject* renderer = this->renderer();
296 for (RenderObject* child = renderer->nextInPreOrder(renderer); child; child = child->nextInPreOrder(renderer)) { 296 for (LayoutObject* child = renderer->nextInPreOrder(renderer); child; child = child->nextInPreOrder(renderer)) {
297 // We need to re-calculate the correct style for the first letter elemen t 297 // We need to re-calculate the correct style for the first letter elemen t
298 // and then apply that to the container and the text fragment inside. 298 // and then apply that to the container and the text fragment inside.
299 if (child->style()->styleType() == FIRST_LETTER && m_remainingTextRender er) { 299 if (child->style()->styleType() == FIRST_LETTER && m_remainingTextRender er) {
300 if (RenderStyle* pseudoStyle = styleForFirstLetter(m_remainingTextRe nderer->parent())) 300 if (RenderStyle* pseudoStyle = styleForFirstLetter(m_remainingTextRe nderer->parent()))
301 child->setPseudoStyle(pseudoStyle); 301 child->setPseudoStyle(pseudoStyle);
302 continue; 302 continue;
303 } 303 }
304 304
305 // We only manage the style for the generated content items. 305 // We only manage the style for the generated content items.
306 if (!child->isText() && !child->isQuote() && !child->isImage()) 306 if (!child->isText() && !child->isQuote() && !child->isImage())
307 continue; 307 continue;
308 308
309 child->setPseudoStyle(renderer->style()); 309 child->setPseudoStyle(renderer->style());
310 } 310 }
311 } 311 }
312 312
313 } // namespace blink 313 } // namespace blink
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