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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 } }
#define NS_EDITOR_ELEMENT_NOT_FOUND \
NS_ERROR_GENERATE_SUCCESS(NS_ERROR_MODULE_EDITOR, 1)
class nsString;
class nsStringArray;
class nsIAtom;
class nsIDOMNode;
class nsIDOMElement;
class nsIHTMLEditor : public nsISupports
{
public:
static const nsIID& GetIID() { static nsIID iid = NS_IHTMLEDITOR_IID; return iid; }
// used by GetAlignment()
typedef enum {
eLeft,
eCenter,
eRight,
eJustify
} EAlignment;
/* ------------ 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;
NS_IMETHOD GetInlinePropertyWithAttrValue(nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue,
PRBool &aFirst, PRBool &aAny, PRBool &aAll,
nsString *outValue)=0;
/**
* RemoveAllInlineProperties() deletes all the inline properties from all
* text in the current selection.
*/
NS_IMETHOD RemoveAllInlineProperties()=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 remove from the selection
* All atoms are for normal HTML tags (e.g.: nsIEditorProptery::font)
* except when you want to remove just links and not named anchors
* For that, use nsIEditorProperty::href
* @param aAttribute the attribute of the property, if applicable. May be null.
* Example: aProperty=nsIEditorProptery::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;
/* ------------ HTML content methods -------------- */
/**
* Tests if a node is a BLOCK element according the the HTML 4.0 DTD
* This does NOT consider CSS effect on display type
*
* @param aNode the node to test
*/
NS_IMETHOD NodeIsBlock(nsIDOMNode *aNode, PRBool &aIsBlock)=0;
/**
* Insert some HTML source at the current location
*
* @param aInputString the string to be inserted
*/
NS_IMETHOD InsertHTML(const nsString &aInputString)=0;
/** Rebuild the entire document from source HTML
* Needed to be able to edit HEAD and other outside-of-BODY content
*
* @param aSourceString HTML source string of the entire new document
*/
NS_IMETHOD RebuildDocumentFromSource(const nsString& aSourceString)=0;
/**
* Insert some HTML source, interpreting
* the string argument according to the given charset.
*
* @param aInputString the string to be inserted
* @param aCharset Charset of string
* @param aParentNode Parent to insert under.
* If null, insert at the current location.
*/
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;
/** Set the documents title.
*/
NS_IMETHOD SetDocumentTitle(const PRUnichar *aTitle)=0;
/* ------------ Selection manipulation -------------- */
/* Should these be moved to nsISelection? */
/** 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;
/**
* SetParagraphFormat Insert a block paragraph tag around selection
* @param aParagraphFormat "p", "h1" to "h6", "address", "pre", or "blockquote"
*/
NS_IMETHOD SetParagraphFormat(const nsString& aParagraphFormat)=0;
/**
* GetParagraphState returns what block tag paragraph format is in the selection.
* @param aMixed True if there is more than one format
* @param outState Name of block tag. "" is returned for none.
*/
NS_IMETHOD GetParagraphState(PRBool &aMixed, nsString &outState)=0;
/**
* GetFontFaceState returns what font face is in the selection.
* @param aMixed True if there is more than one font face
* @param outFace Name of face. Note: "tt" is returned for
* tt tag. "" is returned for none.
*/
NS_IMETHOD GetFontFaceState(PRBool &aMixed, nsString &outFont)=0;
/**
* GetFontColorState returns what font face is in the selection.
* @param aMixed True if there is more than one font color
* @param outColor Color string. "" is returned for none.
*/
NS_IMETHOD GetFontColorState(PRBool &aMixed, nsString &outColor)=0;
/**
* GetFontColorState returns what font face is in the selection.
* @param aMixed True if there is more than one font color
* @param outColor Color string. "" is returned for none.
*/
NS_IMETHOD GetBackgroundColorState(PRBool &aMixed, nsString &outColor)=0;
/**
* GetListState returns what list type is in the selection.
* @param aMixed True if there is more than one type of list, or
* if there is some list and non-list
* @param aOL The company that employs me. No, really, it's
* true if an "ol" list is selected.
* @param aUL true if an "ul" list is selected.
* @param aDL true if a "dl" list is selected.
*/
NS_IMETHOD GetListState(PRBool &aMixed, PRBool &aOL, PRBool &aUL, PRBool &aDL)=0;
/**
* GetListItemState returns what list item type is in the selection.
* @param aMixed True if there is more than one type of list item, or
* if there is some list and non-list
* @param aLI true if "li" list items are selected.
* @param aDT true if "dt" list items are selected.
* @param aDD true if "dd" list items are selected.
*/
NS_IMETHOD GetListItemState(PRBool &aMixed, PRBool &aLI, PRBool &aDT, PRBool &aDD)=0;
/**
* GetAlignment returns what alignment is in the selection.
* @param aMixed True if there is more than one type of list item, or
* if there is some list and non-list
* @param aAlign enum value for first encountered alignment (left/center/right)
*/
NS_IMETHOD GetAlignment(PRBool &aMixed, EAlignment &aAlign)=0;
/**
* Document me!
*
*/
NS_IMETHOD GetIndentState(PRBool &aCanIndent, PRBool &aCanOutdent)=0;
/**
* Document me!
*
*/
NS_IMETHOD MakeOrChangeList(const nsString& aListType, PRBool entireList)=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
* Returns NS_EDITOR_ELEMENT_NOT_FOUND if an element is not found (passes NS_SUCCEEDED macro)
*/
NS_IMETHOD GetElementOrParentByTagName(const nsAReadableString& 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)
* Returns NS_EDITOR_ELEMENT_NOT_FOUND if an element is not found (passes NS_SUCCEEDED macro)
*/
NS_IMETHOD GetSelectedElement(const nsString& aTagName, nsIDOMElement** aReturn)=0;
/** Output the contents of the <HEAD> section as text/HTML format
*/
NS_IMETHOD GetHeadContentsAsHTML(nsString& aOutputString)=0;
/** Replace all children of <HEAD> with string of HTML source
*/
NS_IMETHOD ReplaceHeadContentsWithHTML(const nsString &aSourceToInsert)=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 nsAReadableString& 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;
/** Set the value of the "bgcolor" attribute on the document's <body> element
*
* @param aColor The HTML color string, such as "#ffccff" or "yellow"
*/
NS_IMETHOD SetBackgroundColor(const nsString& aColor)=0;
/** Set an attribute on the document's <body> element
* such as text, link, background colors
*
* 8/31/00 THIS ISN'T BEING USED? SHOULD WE DROP IT?
*
* @param aAttr The attribute to be set
* @param aValue The value of the attribute
*/
NS_IMETHOD SetBodyAttribute(const nsString& aAttr, const nsString& aValue)=0;
//XXX Used to suppress spurious drag/drop events to workaround bug 50703
// Don't use this method! It will go away after first release!
NS_IMETHOD IgnoreSpuriousDragEvent(PRBool aIgnoreSpuriousDragEvent)=0;
};
#endif // nsIHTMLEditor_h__
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