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import $ from 'jquery';
export default class Placeholder {
constructor(context) {
this.context = context;
this.$editingArea = context.layoutInfo.editingArea;
this.options = context.options;
if (this.options.inheritPlaceholder === true) {
// get placeholder value from the original element
this.options.placeholder = this.context.$note.attr('placeholder') || this.options.placeholder;
}
this.events = {
'summernote.init summernote.change': () => {
this.update();
},
'summernote.codeview.toggled': () => {
this.update();
},
};
}
shouldInitialize() {
return !!this.options.placeholder;
}
initialize() {
this.$placeholder = $('<div class="note-placeholder"></div>');
this.$placeholder.on('click', () => {
this.context.invoke('focus');
}).html(this.options.placeholder).prependTo(this.$editingArea);
this.update();
}
destroy() {
this.$placeholder.remove();
}
update() {
const isShow = !this.context.invoke('codeview.isActivated') && this.context.invoke('editor.isEmpty');
this.$placeholder.toggle(isShow);
}
}