// 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/.

let SocialUI = {
  // Called on delayed startup to initialize UI
  init: function SocialUI_init() {
    Services.obs.addObserver(this, "social:pref-changed", false);
    Social.init(this._providerReady.bind(this));
  },

  // Called on window unload
  uninit: function SocialUI_uninit() {
    Services.obs.removeObserver(this, "social:pref-changed");
  },

  // Called when the social.enabled pref is changed
  observe: function SocialUI_observe(aSubject, aTopic, aData) {
    SocialShareButton.updateButtonEnabledState();
  },

  // Called once Social.jsm's provider has been set
  _providerReady: function SocialUI_providerReady() {
    SocialShareButton.init();
  }
}

let SocialShareButton = {
  init: function SSB_init() {
    this.sharePopup.hidden = false;
    this.updateButtonEnabledState();
  },

  get shareButton() {
    return document.getElementById("share-button");
  },
  get sharePopup() {
    return document.getElementById("editSharePopup");
  },

  dismissSharePopup: function SSB_dismissSharePopup() {
    this.sharePopup.hidePopup();
  },

  updateButtonEnabledState: function SSB_updateButtonEnabledState() {
    let shareButton = this.shareButton;
    if (shareButton)
      shareButton.hidden = !Social.provider || !Social.provider.enabled ||
                           !Social.provider.port;
  },

  onClick: function SSB_onClick(aEvent) {
    if (aEvent.button != 0)
      return;

    // Don't bubble to the textbox, to avoid unwanted selection of the address.
    aEvent.stopPropagation();

    this.sharePage();
  },

  panelShown: function SSB_panelShown(aEvent) {
    let sharePopupOkButton = document.getElementById("editSharePopupOkButton");
    if (sharePopupOkButton)
      sharePopupOkButton.focus();
  },

  sharePage: function SSB_sharePage() {
    let uri = gBrowser.currentURI;
    if (!Social.isPageShared(uri)) {
      Social.sharePage(uri);
      this.updateShareState();
    } else {
      this.sharePopup.openPopup(this.shareButton, "bottomcenter topright");
    }
  },

  unsharePage: function SSB_unsharePage() {
    Social.unsharePage(gBrowser.currentURI);
    this.updateShareState();
    this.dismissSharePopup();
  },

  updateShareState: function SSB_updateShareState() {
    let currentPageShared = Social.isPageShared(gBrowser.currentURI);

    // Provide a11y-friendly notification of share.
    let status = document.getElementById("share-button-status");
    if (status) {
      let statusString = currentPageShared ?
                           gNavigatorBundle.getString("social.pageShared.label") : "";
      status.setAttribute("value", statusString);
    }

    // Update the share button, if present
    let shareButton = this.shareButton;
    if (!shareButton)
      return;

    if (currentPageShared) {
      shareButton.setAttribute("shared", "true");
      shareButton.setAttribute("tooltiptext", gNavigatorBundle.getString("social.shareButton.sharedtooltip"));
    } else {
      shareButton.removeAttribute("shared");
      shareButton.setAttribute("tooltiptext", gNavigatorBundle.getString("social.shareButton.tooltip"));
    }
  }
};