michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/dom/BarProps.h"
michael@0: #include "mozilla/dom/BarPropBinding.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "nsGlobalWindow.h"
michael@0: #include "nsIDocShell.h"
michael@0: #include "nsIScrollable.h"
michael@0: #include "nsIWebBrowserChrome.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: //
michael@0: //  Basic (virtual) BarProp class implementation
michael@0: //
michael@0: BarProp::BarProp(nsGlobalWindow* aWindow)
michael@0:   : mDOMWindow(aWindow)
michael@0: {
michael@0:   MOZ_ASSERT(aWindow->IsInnerWindow());
michael@0:   SetIsDOMBinding();
michael@0: }
michael@0: 
michael@0: BarProp::~BarProp()
michael@0: {
michael@0: }
michael@0: 
michael@0: nsPIDOMWindow*
michael@0: BarProp::GetParentObject() const
michael@0: {
michael@0:   return mDOMWindow;
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: BarProp::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return BarPropBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(BarProp, mDOMWindow)
michael@0: NS_IMPL_CYCLE_COLLECTING_ADDREF(BarProp)
michael@0: NS_IMPL_CYCLE_COLLECTING_RELEASE(BarProp)
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(BarProp)
michael@0:   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
michael@0:   NS_INTERFACE_MAP_ENTRY(nsISupports)
michael@0: NS_INTERFACE_MAP_END
michael@0: 
michael@0: bool
michael@0: BarProp::GetVisibleByFlag(uint32_t aChromeFlag, ErrorResult& aRv)
michael@0: {
michael@0:   nsCOMPtr<nsIWebBrowserChrome> browserChrome = GetBrowserChrome();
michael@0:   NS_ENSURE_TRUE(browserChrome, false);
michael@0: 
michael@0:   uint32_t chromeFlags;
michael@0: 
michael@0:   if (NS_FAILED(browserChrome->GetChromeFlags(&chromeFlags))) {
michael@0:     aRv.Throw(NS_ERROR_FAILURE);
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   return (chromeFlags & aChromeFlag);
michael@0: }
michael@0: 
michael@0: void
michael@0: BarProp::SetVisibleByFlag(bool aVisible, uint32_t aChromeFlag,
michael@0:                           ErrorResult& aRv)
michael@0: {
michael@0:   nsCOMPtr<nsIWebBrowserChrome> browserChrome = GetBrowserChrome();
michael@0:   NS_ENSURE_TRUE_VOID(browserChrome);
michael@0: 
michael@0:   if (!nsContentUtils::IsCallerChrome()) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   uint32_t chromeFlags;
michael@0: 
michael@0:   if (NS_FAILED(browserChrome->GetChromeFlags(&chromeFlags))) {
michael@0:     aRv.Throw(NS_ERROR_FAILURE);
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (aVisible)
michael@0:     chromeFlags |= aChromeFlag;
michael@0:   else
michael@0:     chromeFlags &= ~aChromeFlag;
michael@0: 
michael@0:   if (NS_FAILED(browserChrome->SetChromeFlags(chromeFlags))) {
michael@0:     aRv.Throw(NS_ERROR_FAILURE);
michael@0:   }
michael@0: }
michael@0: 
michael@0: already_AddRefed<nsIWebBrowserChrome>
michael@0: BarProp::GetBrowserChrome()
michael@0: {
michael@0:   if (!mDOMWindow) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   return mDOMWindow->GetWebBrowserChrome();
michael@0: }
michael@0: 
michael@0: //
michael@0: // MenubarProp class implementation
michael@0: //
michael@0: 
michael@0: MenubarProp::MenubarProp(nsGlobalWindow *aWindow)
michael@0:   : BarProp(aWindow)
michael@0: {
michael@0: }
michael@0: 
michael@0: MenubarProp::~MenubarProp()
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: MenubarProp::GetVisible(ErrorResult& aRv)
michael@0: {
michael@0:   return BarProp::GetVisibleByFlag(nsIWebBrowserChrome::CHROME_MENUBAR, aRv);
michael@0: }
michael@0: 
michael@0: void
michael@0: MenubarProp::SetVisible(bool aVisible, ErrorResult& aRv)
michael@0: {
michael@0:   BarProp::SetVisibleByFlag(aVisible, nsIWebBrowserChrome::CHROME_MENUBAR, aRv);
michael@0: }
michael@0: 
michael@0: //
michael@0: // ToolbarProp class implementation
michael@0: //
michael@0: 
michael@0: ToolbarProp::ToolbarProp(nsGlobalWindow *aWindow)
michael@0:   : BarProp(aWindow)
michael@0: {
michael@0: }
michael@0: 
michael@0: ToolbarProp::~ToolbarProp()
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: ToolbarProp::GetVisible(ErrorResult& aRv)
michael@0: {
michael@0:   return BarProp::GetVisibleByFlag(nsIWebBrowserChrome::CHROME_TOOLBAR, aRv);
michael@0: }
michael@0: 
michael@0: void
michael@0: ToolbarProp::SetVisible(bool aVisible, ErrorResult& aRv)
michael@0: {
michael@0:   BarProp::SetVisibleByFlag(aVisible, nsIWebBrowserChrome::CHROME_TOOLBAR,
michael@0:                             aRv);
michael@0: }
michael@0: 
michael@0: //
michael@0: // LocationbarProp class implementation
michael@0: //
michael@0: 
michael@0: LocationbarProp::LocationbarProp(nsGlobalWindow *aWindow)
michael@0:   : BarProp(aWindow)
michael@0: {
michael@0: }
michael@0: 
michael@0: LocationbarProp::~LocationbarProp()
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: LocationbarProp::GetVisible(ErrorResult& aRv)
michael@0: {
michael@0:   return BarProp::GetVisibleByFlag(nsIWebBrowserChrome::CHROME_LOCATIONBAR,
michael@0:                                    aRv);
michael@0: }
michael@0: 
michael@0: void
michael@0: LocationbarProp::SetVisible(bool aVisible, ErrorResult& aRv)
michael@0: {
michael@0:   BarProp::SetVisibleByFlag(aVisible, nsIWebBrowserChrome::CHROME_LOCATIONBAR,
michael@0:                             aRv);
michael@0: }
michael@0: 
michael@0: //
michael@0: // PersonalbarProp class implementation
michael@0: //
michael@0: 
michael@0: PersonalbarProp::PersonalbarProp(nsGlobalWindow *aWindow)
michael@0:   : BarProp(aWindow)
michael@0: {
michael@0: }
michael@0: 
michael@0: PersonalbarProp::~PersonalbarProp()
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: PersonalbarProp::GetVisible(ErrorResult& aRv)
michael@0: {
michael@0:   return BarProp::GetVisibleByFlag(nsIWebBrowserChrome::CHROME_PERSONAL_TOOLBAR,
michael@0:                                    aRv);
michael@0: }
michael@0: 
michael@0: void
michael@0: PersonalbarProp::SetVisible(bool aVisible, ErrorResult& aRv)
michael@0: {
michael@0:   BarProp::SetVisibleByFlag(aVisible,
michael@0:                             nsIWebBrowserChrome::CHROME_PERSONAL_TOOLBAR,
michael@0:                             aRv);
michael@0: }
michael@0: 
michael@0: //
michael@0: // StatusbarProp class implementation
michael@0: //
michael@0: 
michael@0: StatusbarProp::StatusbarProp(nsGlobalWindow *aWindow)
michael@0:   : BarProp(aWindow)
michael@0: {
michael@0: }
michael@0: 
michael@0: StatusbarProp::~StatusbarProp()
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: StatusbarProp::GetVisible(ErrorResult& aRv)
michael@0: {
michael@0:   return BarProp::GetVisibleByFlag(nsIWebBrowserChrome::CHROME_STATUSBAR, aRv);
michael@0: }
michael@0: 
michael@0: void
michael@0: StatusbarProp::SetVisible(bool aVisible, ErrorResult& aRv)
michael@0: {
michael@0:   return BarProp::SetVisibleByFlag(aVisible,
michael@0:                                    nsIWebBrowserChrome::CHROME_STATUSBAR, aRv);
michael@0: }
michael@0: 
michael@0: //
michael@0: // ScrollbarsProp class implementation
michael@0: //
michael@0: 
michael@0: ScrollbarsProp::ScrollbarsProp(nsGlobalWindow *aWindow)
michael@0: : BarProp(aWindow)
michael@0: {
michael@0: }
michael@0: 
michael@0: ScrollbarsProp::~ScrollbarsProp()
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: ScrollbarsProp::GetVisible(ErrorResult& aRv)
michael@0: {
michael@0:   if (!mDOMWindow) {
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIScrollable> scroller =
michael@0:     do_QueryInterface(mDOMWindow->GetDocShell());
michael@0: 
michael@0:   if (!scroller) {
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   int32_t prefValue;
michael@0:   scroller->GetDefaultScrollbarPreferences(
michael@0:               nsIScrollable::ScrollOrientation_Y, &prefValue);
michael@0:   if (prefValue != nsIScrollable::Scrollbar_Never) {
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   scroller->GetDefaultScrollbarPreferences(
michael@0:               nsIScrollable::ScrollOrientation_X, &prefValue);
michael@0:   return prefValue != nsIScrollable::Scrollbar_Never;
michael@0: }
michael@0: 
michael@0: void
michael@0: ScrollbarsProp::SetVisible(bool aVisible, ErrorResult& aRv)
michael@0: {
michael@0:   if (!nsContentUtils::IsCallerChrome()) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   /* Scrollbars, unlike the other barprops, implement visibility directly
michael@0:      rather than handing off to the superclass (and from there to the
michael@0:      chrome window) because scrollbar visibility uniquely applies only
michael@0:      to the window making the change (arguably. it does now, anyway.)
michael@0:      and because embedding apps have no interface for implementing this
michael@0:      themselves, and therefore the implementation must be internal. */
michael@0: 
michael@0:   nsCOMPtr<nsIScrollable> scroller =
michael@0:     do_QueryInterface(mDOMWindow->GetDocShell());
michael@0: 
michael@0:   if (scroller) {
michael@0:     int32_t prefValue;
michael@0: 
michael@0:     if (aVisible) {
michael@0:       prefValue = nsIScrollable::Scrollbar_Auto;
michael@0:     } else {
michael@0:       prefValue = nsIScrollable::Scrollbar_Never;
michael@0:     }
michael@0: 
michael@0:     scroller->SetDefaultScrollbarPreferences(
michael@0:                 nsIScrollable::ScrollOrientation_Y, prefValue);
michael@0:     scroller->SetDefaultScrollbarPreferences(
michael@0:                 nsIScrollable::ScrollOrientation_X, prefValue);
michael@0:   }
michael@0: 
michael@0:   /* Notably absent is the part where we notify the chrome window using
michael@0:      GetBrowserChrome()->SetChromeFlags(). Given the possibility of multiple
michael@0:      DOM windows (multiple top-level windows, even) within a single
michael@0:      chrome window, the historical concept of a single "has scrollbars"
michael@0:      flag in the chrome is inapplicable, and we can't tell at this level
michael@0:      whether we represent the particular DOM window that makes this decision
michael@0:      for the chrome.
michael@0: 
michael@0:      So only this object (and its corresponding DOM window) knows whether
michael@0:      scrollbars are visible. The corresponding chrome window will need to
michael@0:      ask (one of) its DOM window(s) when it needs to know about scrollbar
michael@0:      visibility, rather than caching its own copy of that information.
michael@0:   */
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: