third_party/WebKit/public/web/WebElement.h

   1 /*
   2  * Copyright (C) 2009 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #ifndef WebElement_h
  32 #define WebElement_h
  33
  34 #include "../platform/WebImage.h"
  35 #include "WebNode.h"
  36
  37 namespace blink {
  38
  39 class Element;
  40 struct WebRect;
  41
  42 // Provides access to some properties of a DOM element node.
  43 class WebElement : public WebNode {
  44 public:
  45     WebElement() : WebNode() { }
  46     WebElement(const WebElement& e) : WebNode(e) { }
  47
  48     WebElement& operator=(const WebElement& e) { WebNode::assign(e); return *this; }
  49     void assign(const WebElement& e) { WebNode::assign(e); }
  50
  51     BLINK_EXPORT bool isFormControlElement() const;
  52     BLINK_EXPORT bool isTextFormControlElement() const;
  53     // If the element is editable, for example by being contenteditable or being
  54     // an <input> that isn't readonly or disabled.
  55     BLINK_EXPORT bool isEditable() const;
  56     // Returns the qualified name, which may contain a prefix and a colon.
  57     BLINK_EXPORT WebString tagName() const;
  58     // Check if this element has the specified local tag name, and the HTML
  59     // namespace. Tag name matching is case-insensitive.
  60     BLINK_EXPORT bool hasHTMLTagName(const WebString&) const;
  61     BLINK_EXPORT bool hasAttribute(const WebString&) const;
  62     BLINK_EXPORT void removeAttribute(const WebString&);
  63     BLINK_EXPORT WebString getAttribute(const WebString&) const;
  64     BLINK_EXPORT bool setAttribute(const WebString& name, const WebString& value);
  65     BLINK_EXPORT WebString textContent() const;
  66     BLINK_EXPORT void requestFullScreen();
  67     BLINK_EXPORT WebString attributeLocalName(unsigned index) const;
  68     BLINK_EXPORT WebString attributeValue(unsigned index) const;
  69     BLINK_EXPORT unsigned attributeCount() const;
  70
  71     // If this element takes up space in the layout of the page.
  72     BLINK_EXPORT bool hasNonEmptyLayoutSize() const;
  73
  74     // Returns the bounds of the element in viewport space. The bounds
  75     // have been adjusted to include any transformations. This view is
  76     // also called the Root View in Blink.
  77     // This function will update the layout if required.
  78     BLINK_EXPORT WebRect boundsInViewportSpace();
  79
  80     // Returns the image contents of this element or a null WebImage
  81     // if there isn't any.
  82     BLINK_EXPORT WebImage imageContents();
  83
  84 #if BLINK_IMPLEMENTATION
  85     WebElement(const PassRefPtrWillBeRawPtr<Element>&);
  86     WebElement& operator=(const PassRefPtrWillBeRawPtr<Element>&);
  87     operator PassRefPtrWillBeRawPtr<Element>() const;
  88 #endif
  89 };
  90
  91 } // namespace blink
  92
  93 #endif