1 /* 2 * Copyright (C) 1997 Martin Jones (mjones (at) kde.org) 3 * (C) 1997 Torben Weis (weis (at) kde.org) 4 * (C) 1998 Waldo Bastian (bastian (at) kde.org) 5 * (C) 1999 Lars Knoll (knoll (at) kde.org) 6 * (C) 1999 Antti Koivisto (koivisto (at) kde.org) 7 * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved. 8 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) 9 * 10 * This library is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU Library General Public 12 * License as published by the Free Software Foundation; either 13 * version 2 of the License, or (at your option) any later version. 14 * 15 * This library is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * Library General Public License for more details. 19 * 20 * You should have received a copy of the GNU Library General Public License 21 * along with this library; see the file COPYING.LIB. If not, write to 22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 23 * Boston, MA 02110-1301, USA. 24 */ 25 26 #include "config.h" 27 #include "core/rendering/RenderTableCol.h" 28 29 #include "HTMLNames.h" 30 #include "core/html/HTMLTableColElement.h" 31 #include "core/loader/cache/ImageResource.h" 32 #include "core/rendering/RenderTable.h" 33 #include "core/rendering/RenderTableCell.h" 34 35 namespace WebCore { 36 37 using namespace HTMLNames; 38 39 RenderTableCol::RenderTableCol(Element* element) 40 : RenderBox(element) 41 , m_span(1) 42 { 43 // init RenderObject attributes 44 setInline(true); // our object is not Inline 45 updateFromElement(); 46 } 47 48 void RenderTableCol::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) 49 { 50 RenderBox::styleDidChange(diff, oldStyle); 51 52 // If border was changed, notify table. 53 if (parent()) { 54 RenderTable* table = this->table(); 55 if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border()) 56 table->invalidateCollapsedBorders(); 57 } 58 } 59 60 void RenderTableCol::updateFromElement() 61 { 62 unsigned oldSpan = m_span; 63 Node* n = node(); 64 if (n && (n->hasTagName(colTag) || n->hasTagName(colgroupTag))) { 65 HTMLTableColElement* tc = static_cast<HTMLTableColElement*>(n); 66 m_span = tc->span(); 67 } else 68 m_span = !(style() && style()->display() == TABLE_COLUMN_GROUP); 69 if (m_span != oldSpan && style() && parent()) 70 setNeedsLayoutAndPrefWidthsRecalc(); 71 } 72 73 void RenderTableCol::insertedIntoTree() 74 { 75 RenderBox::insertedIntoTree(); 76 table()->addColumn(this); 77 } 78 79 void RenderTableCol::willBeRemovedFromTree() 80 { 81 RenderBox::willBeRemovedFromTree(); 82 table()->removeColumn(this); 83 } 84 85 bool RenderTableCol::isChildAllowed(RenderObject* child, RenderStyle* style) const 86 { 87 // We cannot use isTableColumn here as style() may return 0. 88 return child->isRenderTableCol() && style->display() == TABLE_COLUMN; 89 } 90 91 bool RenderTableCol::canHaveChildren() const 92 { 93 // Cols cannot have children. This is actually necessary to fix a bug 94 // with libraries.uc.edu, which makes a <p> be a table-column. 95 return isTableColumnGroup(); 96 } 97 98 LayoutRect RenderTableCol::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const 99 { 100 // For now, just repaint the whole table. 101 // FIXME: Find a better way to do this, e.g., need to repaint all the cells that we 102 // might have propagated a background color or borders into. 103 // FIXME: check for repaintContainer each time here? 104 105 RenderTable* parentTable = table(); 106 if (!parentTable) 107 return LayoutRect(); 108 return parentTable->clippedOverflowRectForRepaint(repaintContainer); 109 } 110 111 void RenderTableCol::imageChanged(WrappedImagePtr, const IntRect*) 112 { 113 // FIXME: Repaint only the rect the image paints in. 114 repaint(); 115 } 116 117 void RenderTableCol::clearPreferredLogicalWidthsDirtyBits() 118 { 119 setPreferredLogicalWidthsDirty(false); 120 121 for (RenderObject* child = firstChild(); child; child = child->nextSibling()) 122 child->setPreferredLogicalWidthsDirty(false); 123 } 124 125 RenderTable* RenderTableCol::table() const 126 { 127 RenderObject* table = parent(); 128 if (table && !table->isTable()) 129 table = table->parent(); 130 return table && table->isTable() ? toRenderTable(table) : 0; 131 } 132 133 RenderTableCol* RenderTableCol::enclosingColumnGroup() const 134 { 135 if (!parent()->isRenderTableCol()) 136 return 0; 137 138 RenderTableCol* parentColumnGroup = toRenderTableCol(parent()); 139 ASSERT(parentColumnGroup->isTableColumnGroup()); 140 ASSERT(isTableColumn()); 141 return parentColumnGroup; 142 } 143 144 RenderTableCol* RenderTableCol::nextColumn() const 145 { 146 // If |this| is a column-group, the next column is the colgroup's first child column. 147 if (RenderObject* firstChild = this->firstChild()) 148 return toRenderTableCol(firstChild); 149 150 // Otherwise it's the next column along. 151 RenderObject* next = nextSibling(); 152 153 // Failing that, the child is the last column in a column-group, so the next column is the next column/column-group after its column-group. 154 if (!next && parent()->isRenderTableCol()) 155 next = parent()->nextSibling(); 156 157 for (; next && !next->isRenderTableCol(); next = next->nextSibling()) { 158 // We allow captions mixed with columns and column-groups. 159 if (next->isTableCaption()) 160 continue; 161 162 return 0; 163 } 164 165 return toRenderTableCol(next); 166 } 167 168 const BorderValue& RenderTableCol::borderAdjoiningCellStartBorder(const RenderTableCell*) const 169 { 170 return style()->borderStart(); 171 } 172 173 const BorderValue& RenderTableCol::borderAdjoiningCellEndBorder(const RenderTableCell*) const 174 { 175 return style()->borderEnd(); 176 } 177 178 const BorderValue& RenderTableCol::borderAdjoiningCellBefore(const RenderTableCell* cell) const 179 { 180 ASSERT_UNUSED(cell, table()->colElement(cell->col() + cell->colSpan()) == this); 181 return style()->borderStart(); 182 } 183 184 const BorderValue& RenderTableCol::borderAdjoiningCellAfter(const RenderTableCell* cell) const 185 { 186 ASSERT_UNUSED(cell, table()->colElement(cell->col() - 1) == this); 187 return style()->borderEnd(); 188 } 189 190 } 191
