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gecko-dev/editor/public/nsIHTMLEditor.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsIHTMLEditor_h__
#define nsIHTMLEditor_h__
#define NS_IHTMLEDITOR_IID \
{ /* 4805e683-49b9-11d3-9ce4-ed60bd6cb5bc} */ \
0x4805e683, 0x49b9, 0x11d3, \
{ 0x9c, 0xe4, 0xed, 0x60, 0xbd, 0x6c, 0xb5, 0xbc } }
class nsString;
class nsStringArray;
class nsIAtom;
class nsIDOMNode;
class nsIDOMElement;
class nsIDOMKeyEvent;
class nsIHTMLEditor : public nsISupports
{
public:
static const nsIID& GetIID() { static nsIID iid = NS_IHTMLEDITOR_IID; return iid; }
// the bits in an editor behavior mask.
enum {
eEditorPlaintextBit = 0, // only plain text entry is allowed via events
eEditorSingleLineBit, // enter key and CR-LF handled specially
eEditorPasswordBit, // text is not entered into content, only a representative character
eEditorReadonlyBit, // editing events are disabled. Editor may still accept focus.
eEditorDisabledBit, // all events are disabled (like scrolling). Editor will not accept focus.
eEditorFilterInputBit, // text input is limited to certain character types, use mFilter
eEditorMailBit // use mail-compose editting rules
// max 32 bits
};
enum {
eEditorPlaintextMask = (1 << eEditorPlaintextBit),
eEditorSingleLineMask = (1 << eEditorSingleLineBit),
eEditorPasswordMask = (1 << eEditorPasswordBit),
eEditorReadonlyMask = (1 << eEditorReadonlyBit),
eEditorDisabledMask = (1 << eEditorDisabledBit),
eEditorFilterInputMask = (1 << eEditorFilterInputBit),
eEditorMailMask = (1 << eEditorMailBit)
};
// below used by TypedText()
enum {
eTypedText, // user typed text
eTypedBR, // user typed shift-enter to get a br
eTypedBreak // user typed enter
};
/* ------------ Document info methods -------------- */
/** get the length of the document in characters */
NS_IMETHOD GetDocumentLength(PRInt32 *aCount)=0;
NS_IMETHOD SetMaxTextLength(PRInt32 aMaxTextLength)=0;
NS_IMETHOD GetMaxTextLength(PRInt32& aMaxTextLength)=0;
/* ------------ Inline property methods -------------- */
/**
* SetInlineProperty() sets the aggregate properties on the current selection
*
* @param aProperty the property to set on the selection
* @param aAttribute the attribute of the property, if applicable. May be null.
* Example: aProperty="font", aAttribute="color"
* @param aValue if aAttribute is not null, the value of the attribute. May be null.
* Example: aProperty="font", aAttribute="color", aValue="0x00FFFF"
*/
NS_IMETHOD SetInlineProperty(nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue)=0;
/**
* GetInlineProperty() gets the aggregate properties of the current selection.
* All object in the current selection are scanned and their attributes are
* represented in a list of Property object.
*
* @param aProperty the property to get on the selection
* @param aAttribute the attribute of the property, if applicable. May be null.
* Example: aProperty="font", aAttribute="color"
* @param aValue if aAttribute is not null, the value of the attribute. May be null.
* Example: aProperty="font", aAttribute="color", aValue="0x00FFFF"
* @param aFirst [OUT] PR_TRUE if the first text node in the selection has the property
* @param aAny [OUT] PR_TRUE if any of the text nodes in the selection have the property
* @param aAll [OUT] PR_TRUE if all of the text nodes in the selection have the property
*/
NS_IMETHOD GetInlineProperty(nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue,
PRBool &aFirst, PRBool &aAny, PRBool &aAll)=0;
/**
* RemoveInlineProperty() deletes the properties from all text in the current selection.
* If aProperty is not set on the selection, nothing is done.
*
* @param aProperty the property to reomve from the selection
* @param aAttribute the attribute of the property, if applicable. May be null.
* Example: aProperty="font", aAttribute="color"
* nsIEditProperty::allAttributes is special. It indicates that
* all content-based text properties are to be removed from the selection.
*/
NS_IMETHOD RemoveInlineProperty(nsIAtom *aProperty, const nsString *aAttribute)=0;
/**
* Increase font size for text in selection by 1 HTML unit
* All existing text is scanned for existing <FONT SIZE> attributes
* so they will be incremented instead of inserting new <FONT> tag
*/
NS_IMETHOD IncreaseFontSize()=0;
/**
* Decrease font size for text in selection by 1 HTML unit
* All existing text is scanned for existing <FONT SIZE> attributes
* so they will be decreased instead of inserting new <FONT> tag
*/
NS_IMETHOD DecreaseFontSize()=0;
/**
* GetTypingState() gets the state for typing (which may differ from that of
* the current selection).
*
* @param aProperty the property to get state for
* @param aFirst [OUT] PR_TRUE if the state is set on the current type-in state
*/
NS_IMETHOD GetTypingState(nsIAtom *aProperty, PRBool &aSet)=0;
/**
* GetTypingStateValue() gets the state for typing (which may differ from that of
* the current selection).
*
* @param aValue the property to get state for
* @param aFirst [OUT] the value of the current state
*/
NS_IMETHOD GetTypingStateValue(nsIAtom *aProperty, nsString &aValue)=0;
/* ------------ HTML content methods -------------- */
/**
* EditorKeyPress consumes a keyevent.
* @param aKeyEvent key event to consume
*/
NS_IMETHOD EditorKeyPress(nsIDOMKeyEvent* aKeyEvent)=0;
/**
* TypedText responds to user typing. Provides a logging bottleneck for typing.
* @param aString string to type
* @param aAction action to take: insert text, insert BR, insert break
*/
NS_IMETHOD TypedText(const nsString& aString, PRInt32 aAction)=0;
/**
* Insert a break into the content model.<br>
* The interpretation of a break is up to the rule system:
* it may enter a character, split a node in the tree, etc.
*/
NS_IMETHOD InsertBreak()=0;
/**
* InsertText() Inserts a string at the current location, given by the selection.
* If the selection is not collapsed, the selection is deleted and the insertion
* takes place at the resulting collapsed selection.
*
* NOTE: what happens if the string contains a CR?
*
* @param aString the string to be inserted
*/
NS_IMETHOD InsertText(const nsString& aStringToInsert)=0;
/**
* Insert some HTML source at the current location.
*/
NS_IMETHOD InsertHTML(const nsString &aInputString)=0;
/**
* Insert some HTML source at the current location, interpreting
* the string argument according to the given charset.
*/
NS_IMETHOD InsertHTMLWithCharset(const nsString &aInputString,
const nsString& aCharset)=0;
/** Insert an element, which may have child nodes, at the selection
* Used primarily to insert a new element for various insert element dialogs,
* but it enforces the HTML 4.0 DTD "CanContain" rules, so it should
* be useful for other elements.
*
* @param aElement The element to insert
* @param aDeleteSelection Delete the selection before inserting
* If aDeleteSelection is PR_FALSE, then the element is inserted
* after the end of the selection for all element except
* Named Anchors, which insert before the selection
*/
NS_IMETHOD InsertElementAtSelection(nsIDOMElement* aElement, PRBool aDeleteSelection)=0;
/**
* DeleteSelectionAndCreateNode combines DeleteSelection and CreateNode
* It deletes only if there is something selected (doesn't do DEL, BACKSPACE action)
* @param aTag The type of object to create
* @param aNewNode [OUT] The node created. Caller must release aNewNode.
*/
NS_IMETHOD DeleteSelectionAndCreateNode(const nsString& aTag, nsIDOMNode ** aNewNode)=0;
/* ------------ Selection manipulation -------------- */
/* Should these be moved to nsIDOMSelection? */
/** Set the selection at the suppled element
*
* @param aElement An element in the document
*/
NS_IMETHOD SelectElement(nsIDOMElement* aElement)=0;
/** Create a collapsed selection just after aElement
*
* XXX could we parameterize SelectElement(before/select/after>?
*
* The selection is set to parent-of-aElement with an
* offset 1 greater than aElement's offset
* but it enforces the HTML 4.0 DTD "CanContain" rules, so it should
* be useful for other elements.
*
* @param aElement An element in the document
*/
NS_IMETHOD SetCaretAfterElement(nsIDOMElement* aElement)=0;
/**
* Document me!
*
*/
NS_IMETHOD SetParagraphFormat(const nsString& aParagraphFormat)=0;
/**
* Get a list of tagnames of all paragraph tags
* (the closest block parent tags) of all
* elements in the current selection
*
*/
NS_IMETHOD GetParagraphTags(nsStringArray *aTagList)=0;
/**
* Get a list of tagnames of all list tags
* (the closest parent tags that are UL, OL, or DL) of all
* elements in the current selection
*/
NS_IMETHOD GetListTags(nsStringArray *aTagList)=0;
/**
* Document me!
*
*/
NS_IMETHOD MakeOrChangeList(const nsString& aListType)=0;
/**
* Document me!
*
*/
NS_IMETHOD RemoveList(const nsString& aListType)=0;
/**
* Document me!
*
*/
NS_IMETHOD Indent(const nsString& aIndent)=0;
/**
* Document me!
*
*/
NS_IMETHOD Align(const nsString& aAlign)=0;
/** Return the input node or a parent matching the given aTagName,
* starting the search at the supplied node.
* An example of use is for testing if a node is in a table cell
* given a selection anchor node.
*
* @param aTagName The HTML tagname
* Special input values:
* Use "href" to get a link node
* (an "A" tag with the "href" attribute set)
* Use "anchor" or "namedanchor" to get a named anchor node
* (an "A" tag with the "name" attribute set)
* Use "list" to get an OL, UL, or DL list node
* Use "td" to get either a TD or TH cell node
*
* @param aNode The node in the document to start the search
* If it is null, the anchor node of the current selection is used
*/
NS_IMETHOD GetElementOrParentByTagName(const nsString& aTagName, nsIDOMNode *aNode, nsIDOMElement** aReturn)=0;
/** Return an element only if it is the only node selected,
* such as an image, horizontal rule, etc.
* The exception is a link, which is more like a text attribute:
* The Anchor tag is returned if the selection is within the textnode(s)
* that are children of the "A" node.
* This could be a collapsed selection, i.e., a caret within the link text.
*
* @param aTagName The HTML tagname or and empty string
* to get any element (but only if it is the only element selected)
* Special input values for Links and Named anchors:
* Use "href" to get a link node
* (an "A" tag with the "href" attribute set)
* Use "anchor" or "namedanchor" to get a named anchor node
* (an "A" tag with the "name" attribute set)
*/
NS_IMETHOD GetSelectedElement(const nsString& aTagName, nsIDOMElement** aReturn)=0;
/** Return a new element with default attribute values
*
* This does not rely on the selection, and is not sensitive to context.
*
* Used primarily to supply new element for various insert element dialogs
* (Image, Link, NamedAnchor, Table, and HorizontalRule
* are the only returned elements as of 7/25/99)
*
* @param aTagName The HTML tagname
* Special input values for Links and Named anchors:
* Use "href" to get a link node
* (an "A" tag with the "href" attribute set)
* Use "anchor" or "namedanchor" to get a named anchor node
* (an "A" tag with the "name" attribute set)
*/
NS_IMETHOD CreateElementWithDefaults(const nsString& aTagName, nsIDOMElement** aReturn)=0;
/** Insert an link element as the parent of the current selection
*
* @param aElement An "A" element with a non-empty "href" attribute
*/
NS_IMETHOD InsertLinkAroundSelection(nsIDOMElement* aAnchorElement)=0;
/**
* Document me!
*
*/
NS_IMETHOD SetBackgroundColor(const nsString& aColor)=0;
/**
* Document me!
*
*/
NS_IMETHOD SetBodyAttribute(const nsString& aAttr, const nsString& aValue)=0;
// ------------------------------------------------
// THE FOLLOWING ARE IF'D OUT SINCE THEY ARE UNUSED
#if 0
/** Add a block parent node around the selected content.
* Only legal nestings are allowed.
* An example of use is for indenting using blockquote nodes.
*
* @param aParentTag The tag from which the new parent is created.
*/
NS_IMETHOD AddBlockParent(nsString& aParentTag)=0;
/** Replace the block parent node around the selected content with a new block
* parent node of type aParentTag.
* Only legal replacements are allowed.
* An example of use are is transforming H1 to LI ("paragraph type transformations").
* For containing block transformations (transforming UL to OL, for example),
* the caller should RemoveParent("UL"), set the selection appropriately,
* and call AddBlockParent("OL").
*
* @param aParentTag The tag from which the new parent is created.
*/
NS_IMETHOD ReplaceBlockParent(nsString& aParentTag)=0;
/** remove the paragraph style from the selection */
NS_IMETHOD RemoveParagraphStyle()=0;
/** remove block parent of type aTagToRemove from the selection.
* if aTagToRemove is null, the nearest enclosing block that
* is <B>not</B> a root is removed.
*/
NS_IMETHOD RemoveParent(const nsString &aParentTag)=0;
#endif
// END OF UNUSED API POINTS
// ------------------------------------------------
};
#endif // nsIHTMLEditor_h__
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