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| define(["require", "exports", "@syncfusion/ej2-base", "../../common/utils/block", "../../common/utils/common", "../../common/utils/selection", "../../common/constant", "../../models/enums", "../../common/constant"], function (require, exports, ej2_base_1, block_1, common_1, selection_1, constants, enums_1, constant_1) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var DragAndDropAction = (function () {
function DragAndDropAction(manager) {
this.isDragCompleted = false;
this.isDragMoveCancelled = false;
this.draggedBlocks = [];
this.isIndicatorAtTop = false;
this.parent = manager;
}
DragAndDropAction.prototype.wireDragEvents = function () {
ej2_base_1.EventHandler.add(this.parent.rootEditorElement, 'dragover', this.updateCurrentDroppingTarget, this);
ej2_base_1.EventHandler.add(this.parent.rootEditorElement, 'dragenter', this.preventNoDropIcon, this);
Eif (!ej2_base_1.isNullOrUndefined(this.parent.floatingIconAction.floatingIconContainer)) {
var dragIcon = this.parent.floatingIconAction.floatingIconContainer.children[1];
Eif (!ej2_base_1.isNullOrUndefined(dragIcon)) {
ej2_base_1.EventHandler.add(dragIcon, 'dragstart', this.handleDragStart, this);
ej2_base_1.EventHandler.add(dragIcon, 'drag', this.handleDragMove, this);
ej2_base_1.EventHandler.add(dragIcon, 'dragend', this.handleDragStop, this);
}
}
this.parent.observer.on(constant_1.events.destroy, this.destroy, this);
};
DragAndDropAction.prototype.unwireDragEvents = function () {
ej2_base_1.EventHandler.remove(this.parent.rootEditorElement, 'dragover', this.updateCurrentDroppingTarget);
ej2_base_1.EventHandler.remove(this.parent.rootEditorElement, 'dragenter', this.preventNoDropIcon);
if (!ej2_base_1.isNullOrUndefined(this.parent.floatingIconAction.floatingIconContainer)) {
var dragIcon = this.parent.floatingIconAction.floatingIconContainer.children[1];
Eif (!ej2_base_1.isNullOrUndefined(dragIcon)) {
ej2_base_1.EventHandler.remove(dragIcon, 'dragstart', this.handleDragStart);
ej2_base_1.EventHandler.remove(dragIcon, 'drag', this.handleDragMove);
ej2_base_1.EventHandler.remove(dragIcon, 'dragend', this.handleDragStop);
}
}
this.parent.observer.off(constant_1.events.destroy, this.destroy);
};
DragAndDropAction.prototype.preventNoDropIcon = function (e) {
e.preventDefault();
};
DragAndDropAction.prototype.updateCurrentDroppingTarget = function (e) {
e.preventDefault();
var elementsAtPoint = document.elementsFromPoint(e.clientX, e.clientY);
var innerMostElement = elementsAtPoint[0];
var closestBlock = innerMostElement.closest('.' + constants.BLOCK_CLS);
if (innerMostElement && closestBlock) {
this.currentDropTarget = closestBlock;
}
else {
this.currentDropTarget = null;
}
};
DragAndDropAction.prototype.handleDragMove = function (e) {
var _this = this;
if (ej2_base_1.isNullOrUndefined(this.parent.currentHoveredBlock)) {
return;
}
this.isDragCompleted = false;
var dropIndex = this.currentDropTarget ? block_1.getBlockIndexById(this.currentDropTarget.id, this.parent.getEditorBlocks()) : -1;
var eventArgs = {
blocks: this.draggedBlocks,
fromIndex: this.draggedBlocks.map(function (block) { return block_1.getBlockIndexById(block.id, _this.parent.getEditorBlocks()); }),
dropIndex: dropIndex,
event: e,
target: this.currentDropTarget,
cancel: false
};
this.parent.observer.notify('blockDragging', eventArgs);
if (eventArgs.cancel) {
this.isDragMoveCancelled = true;
return;
}
else {
this.isDragMoveCancelled = false;
}
if (this.dragClone) {
var editorRect = this.parent.rootEditorElement.getBoundingClientRect();
ej2_base_1.updateCSSText(this.parent.floatingIconAction.floatingIconContainer, 'display: flex;');
var dragIcon = this.parent.floatingIconAction.floatingIconContainer.querySelector('.e-block-drag-icon');
var dragIconRect = dragIcon.getBoundingClientRect();
ej2_base_1.updateCSSText(this.parent.floatingIconAction.floatingIconContainer, 'display: none;');
var scrollTop = this.parent.rootEditorElement.scrollTop;
var scrollLeft = this.parent.rootEditorElement.scrollLeft;
var totalHeight = Array.from(this.dragClone.children)
.map(function (child) { return child.offsetHeight; })
.reduce(function (sum, height) { return sum + height; }, 0);
var cssText = "opacity: 0.7; left: " + (e.clientX - editorRect.left + dragIconRect.width + scrollLeft) + "px; top: " + (e.clientY - editorRect.top + scrollTop) + "px; width: " + this.parent.currentHoveredBlock.offsetWidth + "px; height: " + totalHeight + "px;";
ej2_base_1.updateCSSText(this.dragClone, cssText);
if (e.clientY < editorRect.top ||
e.clientY > editorRect.bottom ||
e.clientX < editorRect.left ||
e.clientX > editorRect.right) {
ej2_base_1.updateCSSText(this.dragClone, 'opacity: 0;');
}
}
setTimeout(function () {
_this.updateDropIndicator();
}, 50);
};
DragAndDropAction.prototype.handleDragStart = function (e) {
this.isDragCompleted = false;
this.isDragMoveCancelled = false;
var editorBlocks = this.parent.getEditorBlocks();
if (!e.target.classList.contains('e-block-drag-icon') || !this.parent.currentHoveredBlock) {
return;
}
var selectedBlocks = [];
var range = selection_1.getSelectedRange();
if (range && range.toString().trim().length > 0) {
selectedBlocks = this.parent.editorMethods.getSelectedBlocks();
}
else {
var blockModel = block_1.getBlockModelById(this.parent.currentHoveredBlock.id, editorBlocks);
Eif (blockModel) {
selectedBlocks.push(blockModel);
}
}
this.draggedBlocks = selectedBlocks;
var eventArgs = {
blocks: this.draggedBlocks,
fromIndex: this.draggedBlocks.map(function (block) { return block_1.getBlockIndexById(block.id, editorBlocks); }),
dropIndex: this.currentDropTarget ? block_1.getBlockIndexById(this.currentDropTarget.id, editorBlocks) : -1,
event: e,
target: this.currentDropTarget,
cancel: false
};
this.parent.observer.notify('blockDragStart', eventArgs);
if (eventArgs.cancel) {
e.preventDefault();
return;
}
this.dragClone = document.createElement('div');
var cssText = 'position: absolute; opacity: 0; pointer-events: none;';
ej2_base_1.updateCSSText(this.dragClone, cssText);
this.dragClone.classList.add('e-be-dragging-clone');
for (var _i = 0, selectedBlocks_1 = selectedBlocks; _i < selectedBlocks_1.length; _i++) {
var block = selectedBlocks_1[_i];
var blockElement = document.getElementById(block.id);
Eif (blockElement) {
this.dragClone.appendChild(blockElement.cloneNode(true));
}
}
this.parent.blockContainer.appendChild(this.dragClone);
var transparentImage = new Image();
transparentImage.src = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==';
e.dataTransfer.setDragImage(transparentImage, 0, 0);
};
DragAndDropAction.prototype.handleDragStop = function (e) {
var _this = this;
if (ej2_base_1.isNullOrUndefined(this.parent.currentHoveredBlock)) {
return;
}
if (this.isDragMoveCancelled) {
common_1.cleanupElement(this.dragClone);
common_1.cleanupElement(this.dropIndicator);
return;
}
e.preventDefault();
this.isDragCompleted = true;
var currentIndicatorBlock;
if (this.dropIndicator) {
currentIndicatorBlock = this.dropIndicator.closest('.' + constants.BLOCK_CLS);
}
var dropTarget;
if (currentIndicatorBlock) {
var hoveredBlockRect = this.parent.currentHoveredBlock.getBoundingClientRect();
var isMovingDown = hoveredBlockRect.top < currentIndicatorBlock.getBoundingClientRect().top;
if (!this.isIndicatorAtTop && !isMovingDown) {
dropTarget = block_1.getAdjacentBlock(currentIndicatorBlock, 'next');
Iif (ej2_base_1.isNullOrUndefined(dropTarget)) {
dropTarget = currentIndicatorBlock;
}
}
else {
dropTarget = currentIndicatorBlock;
}
}
var eventArgs = {
blocks: this.draggedBlocks.map(function (block) { return block; }),
fromIndex: this.draggedBlocks.map(function (block) { return block_1.getBlockIndexById(block.id, _this.parent.getEditorBlocks()); }),
dropIndex: dropTarget ? block_1.getBlockIndexById(dropTarget.id, this.parent.getEditorBlocks()) : -1,
event: e,
target: dropTarget
};
this.parent.observer.notify('blockDropped', eventArgs);
common_1.cleanupElement(this.dragClone);
common_1.cleanupElement(this.dropIndicator);
if (dropTarget && dropTarget !== this.parent.currentHoveredBlock) {
this.reorderBlocks(this.draggedBlocks, dropTarget);
this.parent.listPlugin.recalculateMarkersForListItems();
}
this.draggedBlocks = [];
};
DragAndDropAction.prototype.reorderBlocks = function (draggedBlocks, dropTarget) {
this.parent.execCommand({ command: 'MoveBlock', state: {
fromBlockIds: draggedBlocks.map(function (block) { return block.id; }),
toBlockId: dropTarget.id
} });
};
DragAndDropAction.prototype.updateDropIndicator = function () {
var _this = this;
if (this.isDragCompleted ||
!this.currentDropTarget ||
this.currentDropTarget === this.parent.currentHoveredBlock ||
this.draggedBlocks.some(function (block) { return block.id === _this.currentDropTarget.id; })) {
common_1.cleanupElement(this.dropIndicator);
return;
}
if (!this.dropIndicator) {
this.dropIndicator = document.createElement('div');
this.dropIndicator.classList.add('e-be-drop-indicator');
}
var hoverdBlockRect = this.parent.currentHoveredBlock.getBoundingClientRect();
var dropTargetRect = this.currentDropTarget.getBoundingClientRect();
var middleY = dropTargetRect.top + (dropTargetRect.height / 2);
var draggedBlockRect;
if (this.dragClone) {
draggedBlockRect = this.dragClone.children[0].getBoundingClientRect();
}
if (ej2_base_1.isNullOrUndefined(draggedBlockRect) || ej2_base_1.isNullOrUndefined(hoverdBlockRect)) {
return;
}
if (hoverdBlockRect.top > draggedBlockRect.top) {
this.handleDraggingAbove(middleY, draggedBlockRect);
}
else {
this.handleDraggingBelow(middleY, draggedBlockRect);
}
var currentIndicatorBlock = this.dropIndicator.closest('.' + constants.BLOCK_CLS);
Iif (!currentIndicatorBlock) {
return;
}
var indicatorBlockModel = block_1.getBlockModelById(currentIndicatorBlock.id, this.parent.getEditorBlocks());
var specialTypes = [enums_1.BlockType.Divider, enums_1.BlockType.CollapsibleParagraph, enums_1.BlockType.CollapsibleHeading,
enums_1.BlockType.Callout, enums_1.BlockType.Table, enums_1.BlockType.Image, enums_1.BlockType.Code];
var isSpecialType = (specialTypes.indexOf(indicatorBlockModel.blockType) > -1);
Iif (isSpecialType) {
ej2_base_1.updateCSSText(this.dropIndicator, 'left: 46px;');
return;
}
var blockContent = block_1.getBlockContentElement(currentIndicatorBlock);
Iif (!blockContent) {
return;
}
var leftOffset = blockContent.getBoundingClientRect().left - currentIndicatorBlock.getBoundingClientRect().left;
ej2_base_1.updateCSSText(this.dropIndicator, "left: " + leftOffset + "px;");
};
DragAndDropAction.prototype.handleDraggingAbove = function (middleY, draggedBlockRect) {
Eif (draggedBlockRect && draggedBlockRect.top < middleY) {
var adjecentBLockEle = this.currentDropTarget.previousElementSibling;
if (adjecentBLockEle) {
if (!this.checkAndInsertIndicatorInListBlock(adjecentBLockEle, true)) {
adjecentBLockEle.appendChild(this.dropIndicator);
}
this.isIndicatorAtTop = false;
}
else {
if (!this.checkAndInsertIndicatorInListBlock(this.currentDropTarget, false)) {
this.currentDropTarget.prepend(this.dropIndicator);
}
this.isIndicatorAtTop = true;
}
}
};
DragAndDropAction.prototype.handleDraggingBelow = function (middleY, draggedBlockRect) {
Eif (draggedBlockRect && draggedBlockRect.top > middleY) {
if (!this.checkAndInsertIndicatorInListBlock(this.currentDropTarget, true)) {
this.currentDropTarget.appendChild(this.dropIndicator);
}
this.isIndicatorAtTop = false;
}
};
DragAndDropAction.prototype.checkAndInsertIndicatorInListBlock = function (element, isAfter) {
if (block_1.isListTypeBlock(element.getAttribute('data-block-type'))) {
var listItem = element.querySelector('li');
Eif (listItem) {
listItem.insertAdjacentElement(isAfter ? 'afterend' : 'beforebegin', this.dropIndicator);
return true;
}
}
return false;
};
DragAndDropAction.prototype.destroy = function () {
this.unwireDragEvents();
};
return DragAndDropAction;
}());
exports.DragAndDropAction = DragAndDropAction;
});
|