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1 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 : /* This Source Code Form is subject to the terms of the Mozilla Public
4 : * License, v. 2.0. If a copy of the MPL was not distributed with this
5 : * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 :
7 : #ifndef HTMLFrameSetElement_h
8 : #define HTMLFrameSetElement_h
9 :
10 : #include "mozilla/Attributes.h"
11 : #include "mozilla/UniquePtr.h"
12 : #include "nsIDOMHTMLFrameSetElement.h"
13 : #include "nsGenericHTMLElement.h"
14 :
15 : /**
16 : * The nsFramesetUnit enum is used to denote the type of each entry
17 : * in the row or column spec.
18 : */
19 : enum nsFramesetUnit {
20 : eFramesetUnit_Fixed = 0,
21 : eFramesetUnit_Percent,
22 : eFramesetUnit_Relative
23 : };
24 :
25 : /**
26 : * The nsFramesetSpec struct is used to hold a single entry in the
27 : * row or column spec.
28 : */
29 : struct nsFramesetSpec {
30 : nsFramesetUnit mUnit;
31 : nscoord mValue;
32 : };
33 :
34 : /**
35 : * The maximum number of entries allowed in the frame set element row
36 : * or column spec.
37 : */
38 : #define NS_MAX_FRAMESET_SPEC_COUNT 16000
39 :
40 : //----------------------------------------------------------------------
41 :
42 : namespace mozilla {
43 : namespace dom {
44 :
45 : class OnBeforeUnloadEventHandlerNonNull;
46 :
47 : class HTMLFrameSetElement final : public nsGenericHTMLElement,
48 : public nsIDOMHTMLFrameSetElement
49 : {
50 : public:
51 0 : explicit HTMLFrameSetElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
52 0 : : nsGenericHTMLElement(aNodeInfo),
53 : mNumRows(0),
54 : mNumCols(0),
55 0 : mCurrentRowColHint(NS_STYLE_HINT_REFLOW)
56 : {
57 0 : SetHasWeirdParserInsertionMode();
58 0 : }
59 :
60 0 : NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLFrameSetElement, frameset)
61 :
62 : // nsISupports
63 : NS_DECL_ISUPPORTS_INHERITED
64 :
65 : // nsIDOMHTMLFrameSetElement
66 : NS_DECL_NSIDOMHTMLFRAMESETELEMENT
67 :
68 0 : void GetCols(DOMString& aCols)
69 : {
70 0 : GetHTMLAttr(nsGkAtoms::cols, aCols);
71 0 : }
72 0 : void SetCols(const nsAString& aCols, ErrorResult& aError)
73 : {
74 0 : SetHTMLAttr(nsGkAtoms::cols, aCols, aError);
75 0 : }
76 0 : void GetRows(DOMString& aRows)
77 : {
78 0 : GetHTMLAttr(nsGkAtoms::rows, aRows);
79 0 : }
80 0 : void SetRows(const nsAString& aRows, ErrorResult& aError)
81 : {
82 0 : SetHTMLAttr(nsGkAtoms::rows, aRows, aError);
83 0 : }
84 :
85 : virtual bool IsEventAttributeNameInternal(nsIAtom *aName) override;
86 :
87 : // Event listener stuff; we need to declare only the ones we need to
88 : // forward to window that don't come from nsIDOMHTMLFrameSetElement.
89 : #define EVENT(name_, id_, type_, struct_) /* nothing; handled by the superclass */
90 : #define WINDOW_EVENT_HELPER(name_, type_) \
91 : type_* GetOn##name_(); \
92 : void SetOn##name_(type_* handler);
93 : #define WINDOW_EVENT(name_, id_, type_, struct_) \
94 : WINDOW_EVENT_HELPER(name_, EventHandlerNonNull)
95 : #define BEFOREUNLOAD_EVENT(name_, id_, type_, struct_) \
96 : WINDOW_EVENT_HELPER(name_, OnBeforeUnloadEventHandlerNonNull)
97 : #include "mozilla/EventNameList.h" // IWYU pragma: keep
98 : #undef BEFOREUNLOAD_EVENT
99 : #undef WINDOW_EVENT
100 : #undef WINDOW_EVENT_HELPER
101 : #undef EVENT
102 :
103 : /**
104 : * GetRowSpec is used to get the "rows" spec.
105 : * @param out int32_t aNumValues The number of row sizes specified.
106 : * @param out nsFramesetSpec* aSpecs The array of size specifications.
107 : This is _not_ owned by the caller, but by the nsFrameSetElement
108 : implementation. DO NOT DELETE IT.
109 : */
110 : nsresult GetRowSpec(int32_t *aNumValues, const nsFramesetSpec** aSpecs);
111 : /**
112 : * GetColSpec is used to get the "cols" spec
113 : * @param out int32_t aNumValues The number of row sizes specified.
114 : * @param out nsFramesetSpec* aSpecs The array of size specifications.
115 : This is _not_ owned by the caller, but by the nsFrameSetElement
116 : implementation. DO NOT DELETE IT.
117 : */
118 : nsresult GetColSpec(int32_t *aNumValues, const nsFramesetSpec** aSpecs);
119 :
120 :
121 : virtual bool ParseAttribute(int32_t aNamespaceID,
122 : nsIAtom* aAttribute,
123 : const nsAString& aValue,
124 : nsAttrValue& aResult) override;
125 : virtual nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
126 : int32_t aModType) const override;
127 :
128 : virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
129 : bool aPreallocateChildren) const override;
130 :
131 : protected:
132 : virtual ~HTMLFrameSetElement();
133 :
134 : virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
135 :
136 : virtual nsresult BeforeSetAttr(int32_t aNamespaceID, nsIAtom* aName,
137 : const nsAttrValueOrString* aValue,
138 : bool aNotify) override;
139 :
140 : private:
141 : nsresult ParseRowCol(const nsAString& aValue,
142 : int32_t& aNumSpecs,
143 : UniquePtr<nsFramesetSpec[]>* aSpecs);
144 :
145 : /**
146 : * The number of size specs in our "rows" attr
147 : */
148 : int32_t mNumRows;
149 : /**
150 : * The number of size specs in our "cols" attr
151 : */
152 : int32_t mNumCols;
153 : /**
154 : * The style hint to return for the rows/cols attrs in
155 : * GetAttributeChangeHint
156 : */
157 : nsChangeHint mCurrentRowColHint;
158 : /**
159 : * The parsed representation of the "rows" attribute
160 : */
161 : UniquePtr<nsFramesetSpec[]> mRowSpecs; // parsed, non-computed dimensions
162 : /**
163 : * The parsed representation of the "cols" attribute
164 : */
165 : UniquePtr<nsFramesetSpec[]> mColSpecs; // parsed, non-computed dimensions
166 : };
167 :
168 : } // namespace dom
169 : } // namespace mozilla
170 :
171 : #endif // HTMLFrameSetElement_h
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