gecko-dev/docshell/shistory/nsISHEntry.idl

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* The interface to nsISHentry. Each document or subframe in
* Session History will have a nsISHEntry associated with it which will
* hold all information required to recreate the document from history
*
*/
#include "nsISupports.idl"
interface nsILayoutHistoryState;
interface nsIContentViewer;
interface nsIURI;
interface nsIInputStream;
interface nsIDocShellTreeItem;
interface nsISupportsArray;
interface nsIStructuredCloneContainer;
interface nsIBFCacheEntry;
%{C++
#include "nsRect.h"
class nsDocShellEditorData;
class nsSHEntryShared;
%}
[ref] native nsIntRect(nsIntRect);
[ptr] native nsDocShellEditorDataPtr(nsDocShellEditorData);
[ptr] native nsSHEntryShared(nsSHEntryShared);
[scriptable, uuid(3a5e5fa0-5364-4fbb-a87a-3f12a6b51903)]
interface nsISHEntry : nsISupports
{
/**
* A readonly property that returns the URI
* of the current entry. The object returned is
* of type nsIURI
*/
readonly attribute nsIURI URI;
/**
* A readonly property that returns the original URI of the current entry.
* If an entry is the result of a redirect this attribute holds original
* URI. The object returned is of type nsIURI
*/
attribute nsIURI originalURI;
/**
* This flag remembers whether channel has LOAD_REPLACE set.
*/
attribute boolean loadReplace;
/**
* A readonly property that returns the title
* of the current entry. The object returned
* is a encoded string
*/
readonly attribute wstring title;
/**
* A readonly property that returns a boolean
* flag which indicates if the entry was created as a
* result of a subframe navigation. This flag will be
* 'false' when a frameset page is visited for
* the first time. This flag will be 'true' for all
* history entries created as a result of a subframe
* navigation.
*/
readonly attribute boolean isSubFrame;
/** URI for the document */
void setURI(in nsIURI aURI);
/** Referrer URI */
attribute nsIURI referrerURI;
/** Referrer policy, holding one of the values (REFERRER_POLICY_*)
* defined in nsIHttpChannel.
*/
attribute unsigned long referrerPolicy;
/** Content viewer, for fast restoration of presentation */
attribute nsIContentViewer contentViewer;
/** Whether the content viewer is marked "sticky" */
attribute boolean sticky;
/** Saved state of the global window object */
attribute nsISupports windowState;
/**
* Saved position and dimensions of the content viewer; we must adjust the
* root view's widget accordingly if this has changed when the presentation
* is restored.
*/
[noscript] void getViewerBounds(in nsIntRect bounds);
[noscript] void setViewerBounds([const] in nsIntRect bounds);
/**
* Saved child docshells corresponding to contentViewer. The child shells
* are restored as children of the parent docshell, in this order, when the
* parent docshell restores a saved presentation.
*/
/** Append a child shell to the end of our list. */
void addChildShell(in nsIDocShellTreeItem shell);
/**
* Get the child shell at |index|; returns null if |index| is out of bounds.
*/
nsIDocShellTreeItem childShellAt(in long index);
/**
* Clear the child shell list.
*/
void clearChildShells();
/** Saved refresh URI list for the content viewer */
attribute nsISupportsArray refreshURIList;
/**
* Ensure that the cached presentation members are self-consistent.
* If either |contentViewer| or |windowState| are null, then all of the
* following members are cleared/reset:
* contentViewer, sticky, windowState, viewerBounds, childShells,
* refreshURIList.
*/
void syncPresentationState();
/** Title for the document */
void setTitle(in AString aTitle);
/** Post Data for the document */
attribute nsIInputStream postData;
/** LayoutHistoryState for scroll position and form values */
attribute nsILayoutHistoryState layoutHistoryState;
/** parent of this entry */
attribute nsISHEntry parent;
/**
* The loadType for this entry. This is typically loadHistory except
* when reload is pressed, it has the appropriate reload flag
*/
attribute unsigned long loadType;
/**
* An ID to help identify this entry from others during
* subframe navigation
*/
attribute unsigned long ID;
/** attribute to set and get the cache key for the entry */
attribute nsISupports cacheKey;
/** attribute to indicate whether layoutHistoryState should be saved */
attribute boolean saveLayoutStateFlag;
/** attribute to indicate whether the page is already expired in cache */
attribute boolean expirationStatus;
/**
* attribute to indicate the content-type of the document that this
* is a session history entry for
*/
attribute ACString contentType;
/**
* If we created this SHEntry via history.pushState or modified it via
* history.replaceState, and if we changed the SHEntry's URI via the
* push/replaceState call, and if the SHEntry's new URI differs from its
* old URI by more than just the hash, then we set this field to true.
*
* Additionally, if this SHEntry was created by calling pushState from a
* SHEntry whose URI was modified, this SHEntry's URIWasModified field is
* true.
*
*/
attribute boolean URIWasModified;
/** Set/Get scrollers' positon in anchored pages */
void setScrollPosition(in long x, in long y);
void getScrollPosition(out long x, out long y);
/** Additional ways to create an entry */
[noscript] void create(in nsIURI URI, in AString title,
in nsIInputStream inputStream,
in nsILayoutHistoryState layoutHistoryState,
in nsISupports cacheKey, in ACString contentType,
in nsISupports owner,
in unsigned long long docshellID,
in boolean dynamicCreation);
nsISHEntry clone();
/** Attribute that indicates if this entry is for a subframe navigation */
void setIsSubFrame(in boolean aFlag);
/** Return any content viewer present in or below this node in the
nsSHEntry tree. This will differ from contentViewer in the case
where a child nsSHEntry has the content viewer for this tree. */
nsIContentViewer getAnyContentViewer(out nsISHEntry ownerEntry);
/**
* Get the owner, if any, that was associated with the channel
* that the document that was loaded to create this history entry
* came from.
*/
attribute nsISupports owner;
/**
* Get/set data associated with this history state via a pushState() call,
* serialized using structured clone.
**/
attribute nsIStructuredCloneContainer stateData;
/**
* Gets the owning pointer to the editor data assosicated with
* this shistory entry. This forgets its pointer, so free it when
* you're done.
*/
[noscript, notxpcom] nsDocShellEditorDataPtr forgetEditorData();
/**
* Sets the owning pointer to the editor data assosicated with
* this shistory entry. Unless forgetEditorData() is called, this
* shentry will destroy the editor data when it's destroyed.
*/
[noscript, notxpcom] void setEditorData(in nsDocShellEditorDataPtr aData);
/** Returns true if this shistory entry is storing a detached editor. */
[noscript, notxpcom] boolean hasDetachedEditor();
/**
* Returns true if the related docshell was added because of
* dynamic addition of an iframe/frame.
*/
boolean isDynamicallyAdded();
/**
* Returns true if any of the child entries returns true
* when isDynamicallyAdded is called on it.
*/
boolean hasDynamicallyAddedChild();
/**
* The history ID of the docshell.
*/
attribute unsigned long long docshellID;
readonly attribute nsIBFCacheEntry BFCacheEntry;
/**
* Does this SHEntry point to the given BFCache entry? If so, evicting
* the BFCache entry will evict the SHEntry, since the two entries
* correspond to the same document.
*/
[notxpcom, noscript]
boolean hasBFCacheEntry(in nsIBFCacheEntry aEntry);
/**
* Adopt aEntry's BFCacheEntry, so now both this and aEntry point to
* aEntry's BFCacheEntry.
*/
void adoptBFCacheEntry(in nsISHEntry aEntry);
/**
* Create a new BFCache entry and drop our reference to our old one. This
* call unlinks this SHEntry from any other SHEntries for its document.
*/
void abandonBFCacheEntry();
/**
* Does this SHEntry correspond to the same document as aEntry? This is
* true iff the two SHEntries have the same BFCacheEntry. So in
* particular, sharesDocumentWith(aEntry) is guaranteed to return true if
* it's preceeded by a call to adoptBFCacheEntry(aEntry).
*/
boolean sharesDocumentWith(in nsISHEntry aEntry);
/**
* True if this SHEntry corresponds to a document created by a srcdoc iframe.
* Set when a value is assigned to srcdocData.
*/
readonly attribute boolean isSrcdocEntry;
/**
* Contents of the srcdoc attribute in a srcdoc iframe to be loaded instead
* of the URI. Similar to a Data URI, this information is needed to
* recreate the document at a later stage.
* Setting this sets isSrcdocEntry to true
*/
attribute AString srcdocData;
/**
* When isSrcdocEntry is true, this contains the baseURI of the srcdoc
* document for use in situations where it cannot otherwise be determined,
* for example with view-source.
*/
attribute nsIURI baseURI;
};
[scriptable, uuid(bb66ac35-253b-471f-a317-3ece940f04c5)]
interface nsISHEntryInternal : nsISupports
{
[notxpcom] void RemoveFromBFCacheAsync();
[notxpcom] void RemoveFromBFCacheSync();
/**
* A number that is assigned by the sHistory when the entry is activated
*/
attribute unsigned long lastTouched;
/**
* Some state, particularly that related to the back/forward cache, is
* shared between SHEntries which correspond to the same document. This
* method gets a pointer to that shared state.
*
* This shared state is the SHEntry's BFCacheEntry. So
* hasBFCacheEntry(getSharedState()) is guaranteed to return true.
*/
[noscript, notxpcom]
nsSHEntryShared getSharedState();
};
%{ C++
// {BFD1A791-AD9F-11d3-BDC7-0050040A9B44}
#define NS_SHENTRY_CID \
{0xbfd1a791, 0xad9f, 0x11d3, {0xbd, 0xc7, 0x0, 0x50, 0x4, 0xa, 0x9b, 0x44}}
#define NS_SHENTRY_CONTRACTID \
"@mozilla.org/browser/session-history-entry;1"
%}