1 Writer application code.
3 Exact history was lost before Sept. 18th, 2000, but old source code
4 comments show that Writer core dates back until at least November
8 * inc: headers available to all source files inside the module
9 * qa: unit, slow and subsequent tests
12 * uiconfig: user interface configuration
13 * util: UNO passive registration config
16 * core: Writer core (document model, layout, UNO API implementation)
17 * filter: Writer internal filters
18 * ascii: plan text filter
21 * inc: include files for filters
22 * rtf: thin copy&paste helper around the UNO RTF import filter (in writerfilter)
24 * ww8: DOC import, DOC/DOCX/RTF export
25 * xml: ODF import/export, subclassed from xmloff (where most of the work is done)
26 * uibase: user interface (those parts that are linked into sw & always loaded)
27 * ui: user interface (optional parts that are loaded on demand (swui))
31 There is a good overview documentation of basic architecture of Writer core
34 http://wiki.openoffice.org/wiki/Writer/Core_And_Layout
35 http://wiki.openoffice.org/wiki/Writer/Text_Formatting
37 Writer specific WhichIds are defined in sw/inc/hintids.hxx.
39 The details below are mainly about details missing from the Wiki pages.
43 The central class for a document is SwDoc, which represents a document.
45 A lot of the functionality is split out into separate Manager classes,
46 each of which implements some IDocument* interface; there are
47 SwDoc::getIDocument*() methods to retrieve the managers.
49 However there are still too many members and methods in this class,
50 many of which could be moved to some Manager or other...
54 Basically a (fancy) array of SwNode pointers. There are special subclasses of
55 SwNode (SwStartNode and SwEndNode) which are used to encode a nested tree
56 structure into the flat array; the range of nodes from SwStartNode to its
57 corresponding SwEndNode is sometimes called a "section" (but is not necessarily
58 what the high-level document model calls a "Section"; that is just one of the
61 The SwNodes contains the following top-level sections:
65 3. Frame / Header / Footer content
66 4. Deleted Change Tracking content
71 The Undo/Redo information is stored in a sw::UndoManager member of SwDoc,
72 which implements the IDocumentUndoRedo interface.
73 Its members include a SwNodes array containing the document content that
74 is currently not in the actual document but required for Undo/Redo, and
75 a stack of SwUndo actions, each of which represents one user-visible
78 There are also ListActions which internally contain several individual SwUndo
79 actions; these are created by the StartUndo/EndUndo wrapper methods.
81 === Text Attributes ===
83 The sub-structure of paragraphs is stored in the SwpHintsArray member
84 SwTextNode::m_pSwpHints. There is a base class SwTextAttr with numerous
85 subclasses; the SwTextAttr has a start and end index and a SfxPoolItem
86 to store the actual formatting attribute.
88 There are several sub-categories of SwTextAttr:
90 - formatting attributes: Character Styles (SwTextCharFormat, RES_TXTATR_CHARFMT)
91 and Automatic Styles (no special class, RES_TXTATR_AUTOFMT):
92 these are handled by SwpHintsArray::BuildPortions and MergePortions,
93 which create non-overlapping portions of formatting attributes.
95 - nesting attributes: Hyperlinks (SwTextINetFormat, RES_TXTATR_INETFMT),
96 Ruby (SwTextRuby, RES_TXTATR_CJK_RUBY) and Meta/MetaField (SwTextMeta,
97 RES_TXTATR_META/RES_TXTATR_METAFIELD):
98 these maintain a properly nested tree structure.
99 The Meta/Metafield are "special" because they have both start/end
100 and a dummy character at the start.
102 - misc. attributes: Reference Marks, ToX Marks
104 - attributes without end: Fields, Footnotes, Flys (AS_CHAR)
105 These all have a corresponding dummy character in the paragraph text, which
106 is a placeholder for the "expansion" of the attribute, e.g. field content.
110 There are multiple model classes involved for fields:
112 - enum RES_FIELDS enumerates the different types of fields.
113 - SwFieldType contains some shared stuff for all fields of a type.
114 There are many subclasses of SwFieldType, one for each different type
116 For most types of fields there is one shared instance of this per type,
117 which is created in DocumentFieldsManager::_InitFieldTypes()
118 but for some there are more than one, and they are dynamically created, see
119 DocumentFieldsManager::InsertFieldType(). An example for the latter are
120 variable fields (RES_GETEXPFLD/RES_SETEXPFLD), with one SwFieldType per
122 - SwXFieldMaster is the UNO wrapper of a field type.
123 It is a SwClient registered at the SwFieldType.
124 Its life-cycle is determined by UNO clients outside of sw; it will get
125 disposed when the SwFieldType dies.
126 - SwFormatField is the SfxPoolItem of a field.
127 The SwFormatField is a SwClient registered at its SwFieldType.
128 The SwFormatField owns the SwField of the field.
129 - SwField contains the core logic of a field.
130 The SwField is owned by the SwFormatField of the field.
131 There are many subclasses of SwField, one for each different type of field.
132 Note that there are not many places that can Expand the field to its
133 correct value, since for example page number fields require a View
134 with an up to date layout; therefore the correct expansion is cached.
135 - SwTextField is the text attribute of a field.
136 It owns the SwFormatField of the field (like all text attributes).
137 - SwXTextField is the UNO wrapper object of a field.
138 It is a SwClient registered at the SwFormatField.
139 Its life-cycle is determined by UNO clients outside of sw; it will get
140 disposed when the SwFormatField dies.