Quelle nsPrintDialogWin.cpp Sprache: C

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#include "nsPrintDialogWin.h"

#include "nsArray.h"
#include "nsComponentManagerUtils.h"
#include "nsCOMPtr.h"
#include "nsIBaseWindow.h"
#include "nsIBrowserChild.h"
#include "nsIDialogParamBlock.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIPrintSettings.h"
#include "nsIWebBrowserChrome.h"
#include "nsIWidget.h"
#include "nsPrintDialogUtil.h"
#include "nsIPrintSettings.h"
#include "nsIWebBrowserChrome.h"
#include "nsServiceManagerUtils.h"
#include "nsPIDOMWindow.h"
#include "nsQueryObject.h"
#include "WidgetUtils.h"
#include "WinUtils.h"

static const char* kPageSetupDialogURL =
    "chrome://global/content/printPageSetup.xhtml";

using namespace mozilla;
using namespace mozilla::widget;

/**
* ParamBlock
*/

class ParamBlock {
public:
  ParamBlock() { mBlock = 0; }
  ~ParamBlock() { NS_IF_RELEASE(mBlock); }
  nsresult Init() {
    return CallCreateInstance(NS_DIALOGPARAMBLOCK_CONTRACTID, &mBlock);
  }
  nsIDialogParamBlock* operator->() const MOZ_NO_ADDREF_RELEASE_ON_RETURN {
    return mBlock;
  }
  operator nsIDialogParamBlock* const() { return mBlock; }

private:
  nsIDialogParamBlock* mBlock;
};

NS_IMPL_ISUPPORTS(nsPrintDialogServiceWin, nsIPrintDialogService)

nsPrintDialogServiceWin::nsPrintDialogServiceWin() {}

nsPrintDialogServiceWin::~nsPrintDialogServiceWin() {}

NS_IMETHODIMP
nsPrintDialogServiceWin::Init() {
  nsresult rv;
  mWatcher = do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);
  return rv;
}

NS_IMETHODIMP
nsPrintDialogServiceWin::ShowPrintDialog(mozIDOMWindowProxy* aParent,
                                         bool aHaveSelection,
                                         nsIPrintSettings* aSettings) {
  NS_ENSURE_ARG(aParent);
  RefPtr<nsIWidget> parentWidget =
      WidgetUtils::DOMWindowToWidget(nsPIDOMWindowOuter::From(aParent));

  ScopedRtlShimWindow shim(parentWidget.get());
  NS_ASSERTION(shim.get(), "Couldn't get native window for PRint Dialog!");

  return NativeShowPrintDialog(shim.get(), aHaveSelection, aSettings);
}

NS_IMETHODIMP
nsPrintDialogServiceWin::ShowPageSetupDialog(mozIDOMWindowProxy* aParent,
                                             nsIPrintSettings* aNSSettings) {
  NS_ENSURE_ARG(aParent);
  NS_ENSURE_ARG(aNSSettings);

  ParamBlock block;
  nsresult rv = block.Init();
  if (NS_FAILED(rv)) return rv;

  block->SetInt(0, 0);
  rv = DoDialog(aParent, block, aNSSettings, kPageSetupDialogURL);

  // if aWebBrowserPrint is not null then we are printing
  // so we want to pass back NS_ERROR_ABORT on cancel
  if (NS_SUCCEEDED(rv)) {
    int32_t status;
    block->GetInt(0, &status);
    return status == 0 ? NS_ERROR_ABORT : NS_OK;
  }

  // We don't call nsPrintSettingsService::MaybeSavePrintSettingsToPrefs here
  // since it's called for us in printPageSetup.js.  Maybe we should move that
  // call here for consistency with the other platforms though?

  return rv;
}

nsresult nsPrintDialogServiceWin::DoDialog(mozIDOMWindowProxy* aParent,
                                           nsIDialogParamBlock* aParamBlock,
                                           nsIPrintSettings* aPS,
                                           const char* aChromeURL) {
  NS_ENSURE_ARG(aParamBlock);
  NS_ENSURE_ARG(aPS);
  NS_ENSURE_ARG(aChromeURL);

  if (!mWatcher) return NS_ERROR_FAILURE;

  // get a parent, if at all possible
  // (though we'd rather this didn't fail, it's OK if it does. so there's
  // no failure or null check.)
  // retain ownership for method lifetime
  nsCOMPtr<mozIDOMWindowProxy> activeParent;
  if (!aParent) {
    mWatcher->GetActiveWindow(getter_AddRefs(activeParent));
    aParent = activeParent;
  }

  // create a nsIMutableArray of the parameters
  // being passed to the window
  nsCOMPtr<nsIMutableArray> array = nsArray::Create();

  nsCOMPtr<nsISupports> psSupports(do_QueryInterface(aPS));
  NS_ASSERTION(psSupports, "PrintSettings must be a supports");
  array->AppendElement(psSupports);

  nsCOMPtr<nsISupports> blkSupps(do_QueryInterface(aParamBlock));
  NS_ASSERTION(blkSupps, "IOBlk must be a supports");
  array->AppendElement(blkSupps);

  nsCOMPtr<mozIDOMWindowProxy> dialog;
  nsresult rv = mWatcher->OpenWindow(
      aParent, nsDependentCString(aChromeURL), "_blank"_ns,
      "centerscreen,chrome,modal,titlebar"_ns, array, getter_AddRefs(dialog));

  return rv;
}

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