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import $ from 'jquery';
export default class Dropzone {
constructor(context) {
this.context = context;
this.$eventListener = $(document);
this.$editor = context.layoutInfo.editor;
this.$editable = context.layoutInfo.editable;
this.options = context.options;
this.lang = this.options.langInfo;
this.documentEventHandlers = {};
this.$dropzone = $([
'<div class="note-dropzone">',
'<div class="note-dropzone-message"/>',
'</div>',
].join('')).prependTo(this.$editor);
}
/**
* attach Drag and Drop Events
*/
initialize() {
if (this.options.disableDragAndDrop) {
// prevent default drop event
this.documentEventHandlers.onDrop = (e) => {
e.preventDefault();
};
// do not consider outside of dropzone
this.$eventListener = this.$dropzone;
this.$eventListener.on('drop', this.documentEventHandlers.onDrop);
} else {
this.attachDragAndDropEvent();
}
}
/**
* attach Drag and Drop Events
*/
attachDragAndDropEvent() {
let collection = $();
const $dropzoneMessage = this.$dropzone.find('.note-dropzone-message');
this.documentEventHandlers.onDragenter = (e) => {
const isCodeview = this.context.invoke('codeview.isActivated');
const hasEditorSize = this.$editor.width() > 0 && this.$editor.height() > 0;
if (!isCodeview && !collection.length && hasEditorSize) {
this.$editor.addClass('dragover');
this.$dropzone.width(this.$editor.width());
this.$dropzone.height(this.$editor.height());
$dropzoneMessage.text(this.lang.image.dragImageHere);
}
collection = collection.add(e.target);
};
this.documentEventHandlers.onDragleave = (e) => {
collection = collection.not(e.target);
// If nodeName is BODY, then just make it over (fix for IE)
if (!collection.length || e.target.nodeName === 'BODY') {
collection = $();
this.$editor.removeClass('dragover');
}
};
this.documentEventHandlers.onDrop = () => {
collection = $();
this.$editor.removeClass('dragover');
};
// show dropzone on dragenter when dragging a object to document
// -but only if the editor is visible, i.e. has a positive width and height
this.$eventListener.on('dragenter', this.documentEventHandlers.onDragenter)
.on('dragleave', this.documentEventHandlers.onDragleave)
.on('drop', this.documentEventHandlers.onDrop);
// change dropzone's message on hover.
this.$dropzone.on('dragenter', () => {
this.$dropzone.addClass('hover');
$dropzoneMessage.text(this.lang.image.dropImage);
}).on('dragleave', () => {
this.$dropzone.removeClass('hover');
$dropzoneMessage.text(this.lang.image.dragImageHere);
});
// attach dropImage
this.$dropzone.on('drop', (event) => {
const dataTransfer = event.originalEvent.dataTransfer;
// stop the browser from opening the dropped content
event.preventDefault();
if (dataTransfer && dataTransfer.files && dataTransfer.files.length) {
this.$editable.focus();
this.context.invoke('editor.insertImagesOrCallback', dataTransfer.files);
} else {
$.each(dataTransfer.types, (idx, type) => {
// skip moz-specific types
if (type.toLowerCase().indexOf('_moz_') > -1) {
return;
}
const content = dataTransfer.getData(type);
if (type.toLowerCase().indexOf('text') > -1) {
this.context.invoke('editor.pasteHTML', content);
} else {
$(content).each((idx, item) => {
this.context.invoke('editor.insertNode', item);
});
}
});
}
}).on('dragover', false); // prevent default dragover event
}
destroy() {
Object.keys(this.documentEventHandlers).forEach((key) => {
this.$eventListener.off(key.substr(2).toLowerCase(), this.documentEventHandlers[key]);
});
this.documentEventHandlers = {};
}
}
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