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      1 /*
      2  * Copyright (C) 2007 Apple Computer, Inc.  All rights reserved.
      3  * Copyright (C) 2010 Google Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     15  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     16  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     17  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     18  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     19  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     20  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "core/editing/RemoveFormatCommand.h"
     29 
     30 #include "core/CSSValueKeywords.h"
     31 #include "core/HTMLNames.h"
     32 #include "core/css/StylePropertySet.h"
     33 #include "core/dom/Document.h"
     34 #include "core/dom/Element.h"
     35 #include "core/editing/ApplyStyleCommand.h"
     36 #include "core/editing/EditingStyle.h"
     37 #include "core/editing/FrameSelection.h"
     38 #include "core/frame/LocalFrame.h"
     39 
     40 namespace blink {
     41 
     42 using namespace HTMLNames;
     43 
     44 RemoveFormatCommand::RemoveFormatCommand(Document& document)
     45     : CompositeEditCommand(document)
     46 {
     47 }
     48 
     49 static bool isElementForRemoveFormatCommand(const Element* element)
     50 {
     51     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, elements, ());
     52     if (elements.isEmpty()) {
     53         elements.add(acronymTag);
     54         elements.add(bTag);
     55         elements.add(bdoTag);
     56         elements.add(bigTag);
     57         elements.add(citeTag);
     58         elements.add(codeTag);
     59         elements.add(dfnTag);
     60         elements.add(emTag);
     61         elements.add(fontTag);
     62         elements.add(iTag);
     63         elements.add(insTag);
     64         elements.add(kbdTag);
     65         elements.add(nobrTag);
     66         elements.add(qTag);
     67         elements.add(sTag);
     68         elements.add(sampTag);
     69         elements.add(smallTag);
     70         elements.add(strikeTag);
     71         elements.add(strongTag);
     72         elements.add(subTag);
     73         elements.add(supTag);
     74         elements.add(ttTag);
     75         elements.add(uTag);
     76         elements.add(varTag);
     77     }
     78     return elements.contains(element->tagQName());
     79 }
     80 
     81 void RemoveFormatCommand::doApply()
     82 {
     83     LocalFrame* frame = document().frame();
     84 
     85     if (!frame->selection().selection().isNonOrphanedCaretOrRange())
     86         return;
     87 
     88     // Get the default style for this editable root, it's the style that we'll give the
     89     // content that we're operating on.
     90     Element* root = frame->selection().rootEditableElement();
     91     RefPtrWillBeRawPtr<EditingStyle> defaultStyle = EditingStyle::create(root);
     92 
     93     // We want to remove everything but transparent background.
     94     // FIXME: We shouldn't access style().
     95     defaultStyle->style()->setProperty(CSSPropertyBackgroundColor, CSSValueTransparent);
     96 
     97     applyCommandToComposite(ApplyStyleCommand::create(document(), defaultStyle.get(), isElementForRemoveFormatCommand, editingAction()));
     98 }
     99 
    100 }
    101