new

1999-09-28 00:44:47 +00:00
parent 3c8f3e89a9
commit 4546843373
8 changed files with 1935 additions and 0 deletions
--- a/layout/build/nsLayoutModule.cpp
+++ b/layout/build/nsLayoutModule.cpp
@@ -0,0 +1,387 @@
+/* -*- 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 1.0 (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 Communicator client 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.
+ */
+#include "nsCOMPtr.h"
+#include "nsLayoutModule.h"
+#include "nsLayoutCID.h"
+#include "nsIComponentManager.h"
+#include "nsNeckoUtil.h"
+#include "nsICSSStyleSheet.h"
+#include "nsICSSLoader.h"
+
+#include "nsHTMLAtoms.h"
+#include "nsCSSKeywords.h"  // to addref/release table
+#include "nsCSSProps.h"     // to addref/release table
+#include "nsCSSAtoms.h"     // to addref/release table
+#include "nsColorNames.h"   // to addref/release table
+#ifdef INCLUDE_XUL
+#include "nsXULAtoms.h"
+#endif
+#include "nsLayoutAtoms.h"
+
+#include "nsDOMCID.h"
+#include "nsIScriptContext.h"
+#include "nsINameSpaceManager.h"
+#include "nsIScriptNameSetRegistry.h"
+#include "nsIScriptNameSpaceManager.h"
+#include "nsIScriptExternalNameSet.h"
+
+#include "nsIDocumentEncoder.h"
+
+// XXX
+#include "nsIServiceManager.h"
+
+// URL for the "user agent" style sheet
+#define UA_CSS_URL "resource:/res/ua.css"
+
+static nsLayoutModule *gModule = NULL;
+
+extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr,
+                                          nsIFileSpec* location,
+                                          nsIModule** return_cobj)
+{
+  nsresult rv = NS_OK;
+
+  NS_ASSERTION(return_cobj, "Null argument");
+  NS_ASSERTION(gModule == NULL, "nsLayoutModule: Module already created.");
+
+  // Create an initialize the layout module instance
+  nsLayoutModule *m = new nsLayoutModule();
+  if (!m) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  // Increase refcnt and store away nsIModule interface to m in return_cobj
+  rv = m->QueryInterface(nsIModule::GetIID(), (void**)return_cobj);
+  if (NS_FAILED(rv)) {
+    delete m;
+    m = nsnull;
+  }
+  gModule = m;                  // WARNING: Weak Reference
+  return rv;
+}
+
+//----------------------------------------------------------------------
+
+
+static NS_DEFINE_IID(kIScriptNameSetRegistryIID, NS_ISCRIPTNAMESETREGISTRY_IID);
+static NS_DEFINE_IID(kCScriptNameSetRegistryCID, NS_SCRIPT_NAMESET_REGISTRY_CID);
+static NS_DEFINE_IID(kIScriptNameSpaceManagerIID, NS_ISCRIPTNAMESPACEMANAGER_IID);
+static NS_DEFINE_IID(kIScriptExternalNameSetIID, NS_ISCRIPTEXTERNALNAMESET_IID);
+
+class LayoutScriptNameSet : public nsIScriptExternalNameSet {
+public:
+  LayoutScriptNameSet();
+  virtual ~LayoutScriptNameSet();
+
+  NS_DECL_ISUPPORTS
+  
+  NS_IMETHOD InitializeClasses(nsIScriptContext* aScriptContext);
+  NS_IMETHOD AddNameSet(nsIScriptContext* aScriptContext);
+};
+
+LayoutScriptNameSet::LayoutScriptNameSet()
+{
+  NS_INIT_REFCNT();
+}
+
+LayoutScriptNameSet::~LayoutScriptNameSet()
+{
+}
+
+NS_IMPL_ISUPPORTS(LayoutScriptNameSet, kIScriptExternalNameSetIID);
+
+NS_IMETHODIMP 
+LayoutScriptNameSet::InitializeClasses(nsIScriptContext* aScriptContext)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+LayoutScriptNameSet::AddNameSet(nsIScriptContext* aScriptContext)
+{
+  nsresult result = NS_OK;
+  nsIScriptNameSpaceManager* manager;
+  static NS_DEFINE_IID(kHTMLImageElementCID, NS_HTMLIMAGEELEMENT_CID);
+  static NS_DEFINE_IID(kHTMLOptionElementCID, NS_HTMLOPTIONELEMENT_CID);
+
+  result = aScriptContext->GetNameSpaceManager(&manager);
+  if (NS_OK == result) {
+    result = manager->RegisterGlobalName("HTMLImageElement",
+                                         kHTMLImageElementCID,
+                                         PR_TRUE);
+    if (NS_FAILED(result)) {
+      NS_RELEASE(manager);
+      return result;
+    }
+
+    result = manager->RegisterGlobalName("HTMLOptionElement",
+                                         kHTMLOptionElementCID,
+                                         PR_TRUE);
+    if (NS_FAILED(result)) {
+      NS_RELEASE(manager);
+      return result;
+    }
+        
+    NS_RELEASE(manager);
+  }
+  
+  return result;
+}
+
+//----------------------------------------------------------------------
+
+static NS_DEFINE_IID(kIModuleIID, NS_IMODULE_IID);
+
+nsICSSStyleSheet* nsLayoutModule::gUAStyleSheet;
+
+nsIScriptNameSetRegistry* nsLayoutModule::gRegistry;
+
+nsLayoutModule::nsLayoutModule()
+  : mInitialized(PR_FALSE)
+{
+  NS_INIT_ISUPPORTS();
+#ifdef DEBUG_kipp
+  printf("*** Creating layout module %p\n", this);
+#endif
+}
+
+nsLayoutModule::~nsLayoutModule()
+{
+  Shutdown();
+#ifdef DEBUG_kipp
+  printf("*** Destroying layout module %p\n", this);
+#endif
+}
+
+NS_IMPL_ISUPPORTS(nsLayoutModule, kIModuleIID)
+
+// Perform our one-time intialization for this module
+nsresult
+nsLayoutModule::Initialize()
+{
+  if (mInitialized) {
+    return NS_OK;
+  }
+
+  // Register all of our atoms once
+  nsCSSAtoms::AddRefAtoms();
+  nsCSSKeywords::AddRefTable();
+  nsCSSProps::AddRefTable();
+  nsColorNames::AddRefTable();
+  nsHTMLAtoms::AddRefAtoms();
+#ifdef INCLUDE_XUL
+  nsXULAtoms::AddRefAtoms();
+#endif
+
+  // Load the UA style sheet
+  nsCOMPtr<nsIURI> uaURL;
+  nsresult rv = NS_NewURI(getter_AddRefs(uaURL), UA_CSS_URL);
+  if (NS_SUCCEEDED(rv)) {
+    nsCOMPtr<nsICSSLoader> cssLoader;
+    rv = NS_NewCSSLoader(getter_AddRefs(cssLoader));
+    if (cssLoader) {
+      PRBool complete;
+      rv = cssLoader->LoadAgentSheet(uaURL, gUAStyleSheet, complete,
+                                     nsnull, nsnull);
+    }
+  }
+  if (NS_FAILED(rv)) {
+#ifdef DEBUG
+    printf("*** open of %s failed: error=%x\n", UA_CSS_URL, rv);
+#endif
+    return rv;
+  }
+
+  // XXX Initialize the script name set thingy-ma-jigger
+  if (!gRegistry) {
+    rv = nsServiceManager::GetService(kCScriptNameSetRegistryCID,
+                                      kIScriptNameSetRegistryIID,
+                                      (nsISupports**) &gRegistry);
+    if (NS_SUCCEEDED(rv)) {
+      LayoutScriptNameSet* nameSet = new LayoutScriptNameSet();
+      gRegistry->AddExternalNameSet(nameSet);
+    }
+  }
+
+  return rv;
+}
+
+// Shutdown this module, releasing all of the module resources
+void
+nsLayoutModule::Shutdown()
+{
+  // Release all of our atoms
+  nsColorNames::ReleaseTable();
+  nsCSSProps::ReleaseTable();
+  nsCSSKeywords::ReleaseTable();
+  nsCSSAtoms::ReleaseAtoms();
+  nsHTMLAtoms::ReleaseAtoms();
+#ifdef INCLUDE_XUL
+  nsXULAtoms::ReleaseAtoms();
+#endif
+
+  NS_IF_RELEASE(gRegistry);
+  NS_IF_RELEASE(gUAStyleSheet);
+}
+
+NS_IMETHODIMP
+nsLayoutModule::GetClassObject(nsIComponentManager *aCompMgr,
+                               const nsCID& aClass,
+                               const nsIID& aIID,
+                               void** r_classObj)
+{
+  nsresult rv;
+
+  if (!mInitialized) {
+    rv = Initialize();
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+    mInitialized = PR_TRUE;
+  }
+
+  nsIFactory* f = new nsLayoutFactory(aClass);
+  if (!f) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  rv = f->QueryInterface(aIID, r_classObj);
+  if (NS_FAILED(rv)) {
+    delete f;
+  }
+
+  return rv;
+}
+
+//----------------------------------------
+
+struct Components {
+  const char* mDescription;
+  nsID mCID;
+  const char* mProgID;
+};
+
+// The list of components we register
+static Components gComponents[] = {
+  { "Namespace manager", NS_NAMESPACEMANAGER_CID, nsnull, },
+  { "Event listener manager", NS_EVENTLISTENERMANAGER_CID, nsnull, },
+  { "Frame utility", NS_FRAME_UTIL_CID, nsnull, },
+  { "Print preview context", NS_PRINT_PREVIEW_CONTEXT_CID, nsnull, },
+  { "Layout debugger", NS_LAYOUT_DEBUGGER_CID, nsnull, },
+
+  { "HTML document", NS_HTMLDOCUMENT_CID, nsnull, },
+  { "HTML style sheet", NS_HTMLSTYLESHEET_CID, nsnull, },
+  { "HTML-CSS style sheet", NS_HTML_CSS_STYLESHEET_CID, nsnull, },
+
+  { "XML document", NS_XMLDOCUMENT_CID, nsnull, },
+  { "Image document", NS_IMAGEDOCUMENT_CID, nsnull, },
+
+  { "CSS parser", NS_CSSPARSER_CID, nsnull, },
+  { "CSS loader", NS_CSS_LOADER_CID, nsnull, },
+
+  { "HTML element factory", NS_HTML_ELEMENT_FACTORY_CID, nsnull, },
+  { "Text element", NS_TEXTNODE_CID, nsnull, },
+
+  { "Selection", NS_SELECTION_CID, nsnull, },
+  { "Frame selection", NS_FRAMESELECTION_CID, nsnull, },
+  { "Range", NS_RANGE_CID, nsnull, },
+  { "Content iterator", NS_CONTENTITERATOR_CID, nsnull, },
+  { "Subtree iterator", NS_SUBTREEITERATOR_CID, nsnull, },
+
+  // XXX ick
+  { "HTML image element", NS_HTMLIMAGEELEMENT_CID, nsnull, },
+  { "HTML option element", NS_HTMLOPTIONELEMENT_CID, nsnull, },
+  { "Presentation shell", NS_PRESSHELL_CID, nsnull, },
+  // XXX end ick
+
+  { "HTML document encoder", NS_TEXT_ENCODER_CID,
+    NS_DOC_ENCODER_PROGID_BASE "text/html", },
+  { "Plaintext document encoder", NS_TEXT_ENCODER_CID,
+    NS_DOC_ENCODER_PROGID_BASE "text/plain", },
+  { "XIF document encoder", NS_TEXT_ENCODER_CID,
+    NS_DOC_ENCODER_PROGID_BASE "text/xif", },
+};
+#define NUM_COMPONENTS (sizeof(gComponents) / sizeof(gComponents[0]))
+
+NS_IMETHODIMP
+nsLayoutModule::RegisterSelf(nsIComponentManager *aCompMgr,
+                             nsIFileSpec* aPath,
+                             const char* registryLocation,
+                             const char* componentType)
+{
+  nsresult rv = NS_OK;
+
+#ifdef DEBUG
+  printf("*** Registering layout components\n");
+#endif
+
+  Components* cp = gComponents;
+  Components* end = cp + NUM_COMPONENTS;
+  while (cp < end) {
+    rv = aCompMgr->RegisterComponentSpec(cp->mCID, cp->mDescription,
+                                         cp->mProgID, aPath, PR_TRUE, PR_TRUE);
+    if (NS_FAILED(rv)) {
+#ifdef DEBUG
+      printf("nsLayoutModule: unable to register %s component => %x\n",
+             cp->mDescription, rv);
+#endif
+      break;
+    }
+    cp++;
+  }
+
+  rv = RegisterDocumentFactories(aCompMgr, aPath);
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLayoutModule::UnregisterSelf(nsIComponentManager* aCompMgr,
+                               nsIFileSpec* aPath,
+                               const char* registryLocation)
+{
+#ifdef DEBUG
+  printf("*** Unregistering layout components\n");
+#endif
+  Components* cp = gComponents;
+  Components* end = cp + NUM_COMPONENTS;
+  while (cp < end) {
+    nsresult rv = aCompMgr->UnregisterComponentSpec(cp->mCID, aPath);
+    if (NS_FAILED(rv)) {
+#ifdef DEBUG
+      printf("nsLayoutModule: unable to unregister %s component => %x\n",
+             cp->mDescription, rv);
+#endif
+    }
+    cp++;
+  }
+
+  UnregisterDocumentFactories(aCompMgr, aPath);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLayoutModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
+{
+  if (!okToUnload) {
+    return NS_ERROR_INVALID_POINTER;
+  }
+  *okToUnload = PR_FALSE;
+  return NS_ERROR_FAILURE;
+}