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Draggable Everything(Not yet) v0.2
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| // Alan Ren | |
| // Spring 2024 | |
| // NYU ITP | |
| (function () { | |
| let offset_x = 0, | |
| offset_y = 0; | |
| let zIndexCounter = 1000; // Start with a base zIndex value | |
| function initDraggable(element) { | |
| document.querySelectorAll('a').forEach((link) => { | |
| link.style.pointerEvents = 'none'; // Disable pointer events on links | |
| }); | |
| element.querySelectorAll('div, span').forEach((draggableElement) => { | |
| draggableElement.style.touchAction = 'none'; // Prevent default touch actions | |
| draggableElement.style.position = 'relative'; // Needed for correct positioning | |
| draggableElement.style.userSelect = 'none'; // Prevent text selection | |
| draggableElement.style.cursor = 'grab'; // Change cursor to grab | |
| let cross = document.createElement('spam'); | |
| cross.textContent = '✖'; // Unicode cross character | |
| cross.style.position = 'absolute'; | |
| cross.style.top = '0'; | |
| cross.style.right = '0'; | |
| cross.style.color = 'red'; | |
| cross.style.cursor = 'pointer'; | |
| cross.style.display = 'none'; // Initially hidden | |
| cross.style.userSelect = 'none'; // Prevent text selection | |
| draggableElement.addEventListener('mouseover', () => { | |
| cross.style.display = 'inline-block'; | |
| }); | |
| draggableElement.addEventListener('mouseout', () => { | |
| cross.style.display = 'none'; | |
| }); | |
| cross.addEventListener('click', (event) => { | |
| event.stopPropagation(); // Prevent parent drag actions | |
| draggableElement.remove(); // Remove the element | |
| }); | |
| draggableElement.appendChild(cross); | |
| }); | |
| document.addEventListener('pointerdown', function (event) { | |
| let targetElement = event.target.closest('div, span'); | |
| if (targetElement && event.target === targetElement) { | |
| targetElement.style.margin = '0'; | |
| targetElement.style.transform = 'none'; | |
| targetElement.style.position = 'absolute'; | |
| zIndexCounter++; // Increment zIndex for the active element | |
| targetElement.style.zIndex = zIndexCounter.toString(); // Set the highest zIndex | |
| offset_x = event.clientX - targetElement.getBoundingClientRect().left; | |
| offset_y = event.clientY - targetElement.getBoundingClientRect().top; | |
| let initialX = event.clientX - offset_x; | |
| let initialY = event.clientY - offset_y; | |
| targetElement.style.left = `${initialX}px`; | |
| targetElement.style.top = `${initialY}px`; | |
| targetElement.setPointerCapture(event.pointerId); | |
| document.body.style.userSelect = 'none'; // Prevent text selection | |
| event.target.draggableElement = targetElement; | |
| } | |
| }); | |
| document.addEventListener('pointermove', function (event) { | |
| let targetElement = event.target.draggableElement; | |
| if (targetElement) { | |
| let x = event.clientX - offset_x; | |
| let y = event.clientY - offset_y; | |
| targetElement.style.position = 'absolute'; | |
| targetElement.style.left = `${x}px`; | |
| targetElement.style.top = `${y}px`; | |
| } | |
| }); | |
| document.addEventListener('pointerup', function (event) { | |
| let targetElement = event.target.draggableElement; | |
| if (targetElement) { | |
| targetElement.releasePointerCapture(event.pointerId); | |
| document.body.style.userSelect = ''; | |
| event.target.draggableElement = null; // Clear the target | |
| } | |
| }); | |
| } | |
| initDraggable(document); | |
| })(); |
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