# all files / src/js/base/module/ Toolbar.js

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     import $ from 'jquery';
    export default class Toolbar {
      constructor(context) {
        this.context = context;

        this.$window = $(window);
        this.$document = $(document);

        this.ui = $.summernote.ui;
        this.$note = context.layoutInfo.note;
        this.$editor = context.layoutInfo.editor;
        this.$toolbar = context.layoutInfo.toolbar;
        this.options = context.options;

        this.followScroll = this.followScroll.bind(this);
      }

      shouldInitialize() {
        return !this.options.airMode;
      }

      initialize() {
        this.options.toolbar = this.options.toolbar || [];

        Iif (!this.options.toolbar.length) {
          this.$toolbar.hide();
        } else {
          this.context.invoke('buttons.build', this.$toolbar, this.options.toolbar);
        }

        Iif (this.options.toolbarContainer) {
          this.$toolbar.appendTo(this.options.toolbarContainer);
        }

        this.changeContainer(false);

        this.$note.on('summernote.keyup summernote.mouseup summernote.change', () => {
          this.context.invoke('buttons.updateCurrentStyle');
        });

        this.context.invoke('buttons.updateCurrentStyle');
        Eif (this.options.followingToolbar) {
          this.$window.on('scroll resize', this.followScroll);
        }
      }

      destroy() {
        this.$toolbar.children().remove();

        Eif (this.options.followingToolbar) {
          this.$window.off('scroll resize', this.followScroll);
        }
      }

      followScroll() {
        if (this.$editor.hasClass('fullscreen')) {
          return false;
        }

        const $toolbarWrapper = this.$toolbar.parent('.note-toolbar-wrapper');
        const editorHeight = this.$editor.outerHeight();
        const editorWidth = this.$editor.width();

        const toolbarHeight = this.$toolbar.height();
        $toolbarWrapper.css({
          height: toolbarHeight
        });

        // check if the web app is currently using another static bar
        let otherBarHeight = 0;
        Iif (this.options.otherStaticBar) {
          otherBarHeight = $(this.options.otherStaticBar).outerHeight();
        }

        const currentOffset = this.$document.scrollTop();
        const editorOffsetTop = this.$editor.offset().top;
        const editorOffsetBottom = editorOffsetTop + editorHeight;
        const activateOffset = editorOffsetTop - otherBarHeight;
        const deactivateOffsetBottom = editorOffsetBottom - otherBarHeight - toolbarHeight;

        Iif ((currentOffset > activateOffset) && (currentOffset < deactivateOffsetBottom)) {
          this.$toolbar.css({
            position: 'fixed',
            top: otherBarHeight,
            width: editorWidth
          });
        } else {
          this.$toolbar.css({
            position: 'relative',
            top: 0,
            width: '100%'
          });
        }
      }

      changeContainer(isFullscreen) {
        if (isFullscreen) {
          this.$toolbar.prependTo(this.$editor);
        } else {
          Iif (this.options.toolbarContainer) {
            this.$toolbar.appendTo(this.options.toolbarContainer);
          }
        }
      }

      updateFullscreen(isFullscreen) {
        this.ui.toggleBtnActive(this.$toolbar.find('.btn-fullscreen'), isFullscreen);

        this.changeContainer(isFullscreen);
      }

      updateCodeview(isCodeview) {
        this.ui.toggleBtnActive(this.$toolbar.find('.btn-codeview'), isCodeview);
        if (isCodeview) {
          this.deactivate();
        } else {
          this.activate();
        }
      }

      activate(isIncludeCodeview) {
        let $btn = this.$toolbar.find('button');
        if (!isIncludeCodeview) {
          $btn = $btn.not('.btn-codeview');
        }
        this.ui.toggleBtn($btn, true);
      }

      deactivate(isIncludeCodeview) {
        let $btn = this.$toolbar.find('button');
        if (!isIncludeCodeview) {
          $btn = $btn.not('.btn-codeview');
        }
        this.ui.toggleBtn($btn, false);
      }
    }