1 /*
2 * Copyright (C) 2010 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 #include "config.h"
32 #include "ValidationMessage.h"
33
34 #include "CSSPropertyNames.h"
35 #include "CSSStyleSelector.h"
36 #include "CSSValueKeywords.h"
37 #include "FormAssociatedElement.h"
38 #include "HTMLBRElement.h"
39 #include "HTMLNames.h"
40 #include "Page.h"
41 #include "RenderObject.h"
42 #include "Settings.h"
43 #include "ShadowRoot.h"
44 #include "Text.h"
45 #include <wtf/PassOwnPtr.h>
46
47 namespace WebCore {
48
49 using namespace HTMLNames;
50
ValidationMessage(FormAssociatedElement * element)51 ALWAYS_INLINE ValidationMessage::ValidationMessage(FormAssociatedElement* element)
52 : m_element(element)
53 {
54 }
55
~ValidationMessage()56 ValidationMessage::~ValidationMessage()
57 {
58 deleteBubbleTree();
59 }
60
create(FormAssociatedElement * element)61 PassOwnPtr<ValidationMessage> ValidationMessage::create(FormAssociatedElement* element)
62 {
63 return adoptPtr(new ValidationMessage(element));
64 }
65
setMessage(const String & message)66 void ValidationMessage::setMessage(const String& message)
67 {
68 // Don't modify the DOM tree in this context.
69 // If so, an assertion in Node::isFocusable() fails.
70 ASSERT(!message.isEmpty());
71 m_message = message;
72 if (!m_bubble)
73 m_timer.set(new Timer<ValidationMessage>(this, &ValidationMessage::buildBubbleTree));
74 else
75 m_timer.set(new Timer<ValidationMessage>(this, &ValidationMessage::setMessageDOMAndStartTimer));
76 m_timer->startOneShot(0);
77 }
78
setMessageDOMAndStartTimer(Timer<ValidationMessage> *)79 void ValidationMessage::setMessageDOMAndStartTimer(Timer<ValidationMessage>*)
80 {
81 ASSERT(m_bubbleMessage);
82 m_bubbleMessage->removeAllChildren();
83 Vector<String> lines;
84 m_message.split('\n', lines);
85 Document* doc = m_bubbleMessage->document();
86 ExceptionCode ec = 0;
87 for (unsigned i = 0; i < lines.size(); ++i) {
88 if (i) {
89 m_bubbleMessage->appendChild(HTMLBRElement::create(doc), ec);
90 m_bubbleMessage->appendChild(Text::create(doc, lines[i]), ec);
91 } else {
92 RefPtr<HTMLElement> bold = HTMLElement::create(bTag, doc);
93 bold->setInnerText(lines[i], ec);
94 m_bubbleMessage->appendChild(bold.release(), ec);
95 }
96 }
97
98 int magnification = doc->page() ? doc->page()->settings()->validationMessageTimerMaginification() : -1;
99 if (magnification <= 0)
100 m_timer.clear();
101 else {
102 m_timer.set(new Timer<ValidationMessage>(this, &ValidationMessage::deleteBubbleTree));
103 m_timer->startOneShot(max(5.0, static_cast<double>(m_message.length()) * magnification / 1000));
104 }
105 }
106
107 class ElementWithPseudoId : public HTMLElement {
108 public:
create(Document * doc,const AtomicString & pseudoName)109 static PassRefPtr<HTMLElement> create(Document* doc, const AtomicString& pseudoName)
110 {
111 return adoptRef(new ElementWithPseudoId(doc, pseudoName));
112 }
113
114 protected:
ElementWithPseudoId(Document * doc,const AtomicString & pseudoName)115 ElementWithPseudoId(Document* doc, const AtomicString& pseudoName)
116 : HTMLElement(divTag, doc)
117 , m_pseudoName(pseudoName) { };
shadowPseudoId() const118 virtual const AtomicString& shadowPseudoId() const { return m_pseudoName; }
119
120 private:
121 AtomicString m_pseudoName;
122 };
123
buildBubbleTree(Timer<ValidationMessage> *)124 void ValidationMessage::buildBubbleTree(Timer<ValidationMessage>*)
125 {
126 HTMLElement* host = toHTMLElement(m_element);
127 Document* doc = host->document();
128 m_bubble = ElementWithPseudoId::create(doc, "-webkit-validation-bubble");
129 // Need to force position:absolute because RenderMenuList doesn't assume it
130 // contains non-absolute or non-fixed renderers as children.
131 m_bubble->getInlineStyleDecl()->setProperty(CSSPropertyPosition, CSSValueAbsolute);
132 ExceptionCode ec = 0;
133 host->ensureShadowRoot()->appendChild(m_bubble.get(), ec);
134
135 RefPtr<HTMLElement> clipper = ElementWithPseudoId::create(doc, "-webkit-validation-bubble-arrow-clipper");
136 clipper->appendChild(ElementWithPseudoId::create(doc, "-webkit-validation-bubble-arrow"), ec);
137 m_bubble->appendChild(clipper.release(), ec);
138 m_bubbleMessage = ElementWithPseudoId::create(doc, "-webkit-validation-bubble-message");
139 m_bubble->appendChild(m_bubbleMessage, ec);
140
141 setMessageDOMAndStartTimer();
142
143 // FIXME: Use transition to show the bubble.
144
145 // We don't need to adjust the bubble location. The default position is enough.
146 }
147
requestToHideMessage()148 void ValidationMessage::requestToHideMessage()
149 {
150 // We must not modify the DOM tree in this context by the same reason as setMessage().
151 m_timer.set(new Timer<ValidationMessage>(this, &ValidationMessage::deleteBubbleTree));
152 m_timer->startOneShot(0);
153 }
154
deleteBubbleTree(Timer<ValidationMessage> *)155 void ValidationMessage::deleteBubbleTree(Timer<ValidationMessage>*)
156 {
157 if (m_bubble) {
158 m_bubbleMessage = 0;
159 HTMLElement* host = toHTMLElement(m_element);
160 ExceptionCode ec;
161 host->shadowRoot()->removeChild(m_bubble.get(), ec);
162 m_bubble = 0;
163 }
164 m_message = String();
165 }
166
167 } // namespace WebCore
168