/* -*- 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 "nsBaseColorPicker.h"

#include "mozilla/dom/BrowsingContext.h"
#include "mozilla/dom/CanonicalBrowsingContext.h"
#include "nsThreadUtils.h"

NS_IMETHODIMP
nsBaseColorPicker::Init(mozilla::dom::BrowsingContext* aBrowsingContext,
                        const nsAString& aTitle, const nsAString& aInitialColor,
                        const nsTArray<nsString>& aDefaultColors) {
  MOZ_ASSERT(
      aBrowsingContext,
      "Null browsingContext passed to colorpicker, no color picker for you!");

  mBrowsingContext = aBrowsingContext;
  mTitle = aTitle;
  mInitialColor = aInitialColor;
  return InitNative(aDefaultColors);
}

NS_IMETHODIMP
nsBaseColorPicker::Open(nsIColorPickerShownCallback* aCallback) {
  MOZ_ASSERT(aCallback);

  if (MaybeBlockColorPicker(aCallback)) {
    return NS_OK;
  }

  if (mCallback) {
    // It means Open has already been called: this is not allowed
    NS_WARNING("mCallback is already set. Open called twice?");
    return NS_ERROR_FAILURE;
  }
  mCallback = aCallback;

  return OpenNative();
}

bool nsBaseColorPicker::MaybeBlockColorPicker(
    nsIColorPickerShownCallback* aCallback) {
  MOZ_ASSERT(mBrowsingContext);

  if (!mBrowsingContext->Canonical()->CanOpenModalPicker()) {
    if (aCallback) {
      // Color pickers are disabled, so we answer the callback with
      // empty string.
      NS_DispatchToCurrentThread(mozilla::NewRunnableMethod<const nsAString&>(
          "nsBaseColorPicker::CallbackWithEmptyString", aCallback,
          &nsIColorPickerShownCallback::Done, EmptyString()));
    }
    return true;
  }

  return false;
}