ngx-gridster
Version:
199 lines • 17.2 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/** @type {?} */
let scrollSensitivity;
/** @type {?} */
let scrollSpeed;
/** @type {?} */
const intervalDuration = 50;
/** @type {?} */
let gridsterElement;
/** @type {?} */
let resizeEvent;
/** @type {?} */
let resizeEventType;
/** @type {?} */
let intervalE;
/** @type {?} */
let intervalW;
/** @type {?} */
let intervalN;
/** @type {?} */
let intervalS;
/**
* @param {?} gridster
* @param {?} left
* @param {?} top
* @param {?} width
* @param {?} height
* @param {?} e
* @param {?} lastMouse
* @param {?} calculateItemPosition
* @param {?=} resize
* @param {?=} resizeEventScrollType
* @return {?}
*/
export function scroll(gridster, left, top, width, height, e, lastMouse, calculateItemPosition, resize, resizeEventScrollType) {
scrollSensitivity = gridster.$options.scrollSensitivity;
scrollSpeed = gridster.$options.scrollSpeed;
gridsterElement = gridster.el;
resizeEvent = resize;
resizeEventType = resizeEventScrollType;
/** @type {?} */
const offsetWidth = gridsterElement.offsetWidth;
/** @type {?} */
const offsetHeight = gridsterElement.offsetHeight;
/** @type {?} */
const offsetLeft = gridsterElement.scrollLeft;
/** @type {?} */
const offsetTop = gridsterElement.scrollTop;
/** @type {?} */
const elemTopOffset = top - offsetTop;
/** @type {?} */
const elemBottomOffset = offsetHeight + offsetTop - top - height;
if (!gridster.$options.disableScrollVertical) {
if (lastMouse.clientY < e.clientY && elemBottomOffset < scrollSensitivity) {
cancelN();
if ((resizeEvent && resizeEventType && !resizeEventType.s) || intervalS) {
return;
}
intervalS = startVertical(1, calculateItemPosition, lastMouse);
}
else if (lastMouse.clientY > e.clientY && offsetTop > 0 && elemTopOffset < scrollSensitivity) {
cancelS();
if ((resizeEvent && resizeEventType && !resizeEventType.n) || intervalN) {
return;
}
intervalN = startVertical(-1, calculateItemPosition, lastMouse);
}
else if (lastMouse.clientY !== e.clientY) {
cancelVertical();
}
}
/** @type {?} */
const elemRightOffset = offsetLeft + offsetWidth - left - width;
/** @type {?} */
const elemLeftOffset = left - offsetLeft;
if (!gridster.$options.disableScrollHorizontal) {
if (lastMouse.clientX < e.clientX && elemRightOffset <= scrollSensitivity) {
cancelW();
if ((resizeEvent && resizeEventType && !resizeEventType.e) || intervalE) {
return;
}
intervalE = startHorizontal(1, calculateItemPosition, lastMouse);
}
else if (lastMouse.clientX > e.clientX && offsetLeft > 0 && elemLeftOffset < scrollSensitivity) {
cancelE();
if ((resizeEvent && resizeEventType && !resizeEventType.w) || intervalW) {
return;
}
intervalW = startHorizontal(-1, calculateItemPosition, lastMouse);
}
else if (lastMouse.clientX !== e.clientX) {
cancelHorizontal();
}
}
}
/**
* @param {?} sign
* @param {?} calculateItemPosition
* @param {?} lastMouse
* @return {?}
*/
function startVertical(sign, calculateItemPosition, lastMouse) {
/** @type {?} */
let clientY = lastMouse.clientY;
return setInterval((/**
* @return {?}
*/
() => {
if (!gridsterElement || sign === -1 && gridsterElement.scrollTop - scrollSpeed < 0) {
cancelVertical();
}
gridsterElement.scrollTop += sign * scrollSpeed;
clientY += sign * scrollSpeed;
calculateItemPosition({ clientX: lastMouse.clientX, clientY: clientY });
}), intervalDuration);
}
/**
* @param {?} sign
* @param {?} calculateItemPosition
* @param {?} lastMouse
* @return {?}
*/
function startHorizontal(sign, calculateItemPosition, lastMouse) {
/** @type {?} */
let clientX = lastMouse.clientX;
return setInterval((/**
* @return {?}
*/
() => {
if (!gridsterElement || sign === -1 && gridsterElement.scrollLeft - scrollSpeed < 0) {
cancelHorizontal();
}
gridsterElement.scrollLeft += sign * scrollSpeed;
clientX += sign * scrollSpeed;
calculateItemPosition({ clientX: clientX, clientY: lastMouse.clientY });
}), intervalDuration);
}
/**
* @return {?}
*/
export function cancelScroll() {
cancelHorizontal();
cancelVertical();
gridsterElement = undefined;
}
/**
* @return {?}
*/
function cancelHorizontal() {
cancelE();
cancelW();
}
/**
* @return {?}
*/
function cancelVertical() {
cancelN();
cancelS();
}
/**
* @return {?}
*/
function cancelE() {
if (intervalE) {
clearInterval(intervalE);
intervalE = 0;
}
}
/**
* @return {?}
*/
function cancelW() {
if (intervalW) {
clearInterval(intervalW);
intervalW = 0;
}
}
/**
* @return {?}
*/
function cancelS() {
if (intervalS) {
clearInterval(intervalS);
intervalS = 0;
}
}
/**
* @return {?}
*/
function cancelN() {
if (intervalN) {
clearInterval(intervalN);
intervalN = 0;
}
}
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{GridsterResizeEventType} from './gridsterResizeEventType.interface';\r\nimport {GridsterComponentInterface} from './gridster.interface';\r\n\r\nlet scrollSensitivity: number;\r\nlet scrollSpeed: number;\r\nconst intervalDuration = 50;\r\nlet gridsterElement: any;\r\nlet resizeEvent: boolean | undefined;\r\nlet resizeEventType: GridsterResizeEventType | undefined;\r\nlet intervalE: number;\r\nlet intervalW: number;\r\nlet intervalN: number;\r\nlet intervalS: number;\r\n\r\nexport function scroll(gridster: GridsterComponentInterface, left: number, top: number, width: number, height: number,\r\n                       e: MouseEvent, lastMouse: any,\r\n                       calculateItemPosition: Function, resize?: boolean, resizeEventScrollType?: GridsterResizeEventType) {\r\n  scrollSensitivity = gridster.$options.scrollSensitivity;\r\n  scrollSpeed = gridster.$options.scrollSpeed;\r\n  gridsterElement = gridster.el;\r\n  resizeEvent = resize;\r\n  resizeEventType = resizeEventScrollType;\r\n\r\n  const offsetWidth = gridsterElement.offsetWidth;\r\n  const offsetHeight = gridsterElement.offsetHeight;\r\n  const offsetLeft = gridsterElement.scrollLeft;\r\n  const offsetTop = gridsterElement.scrollTop;\r\n  const elemTopOffset = top - offsetTop;\r\n  const elemBottomOffset = offsetHeight + offsetTop - top - height;\r\n\r\n  if (!gridster.$options.disableScrollVertical) {\r\n    if (lastMouse.clientY < e.clientY && elemBottomOffset < scrollSensitivity) {\r\n      cancelN();\r\n      if ((resizeEvent && resizeEventType && !resizeEventType.s) || intervalS) {\r\n        return;\r\n      }\r\n      intervalS = startVertical(1, calculateItemPosition, lastMouse);\r\n    } else if (lastMouse.clientY > e.clientY && offsetTop > 0 && elemTopOffset < scrollSensitivity) {\r\n      cancelS();\r\n      if ((resizeEvent && resizeEventType && !resizeEventType.n) || intervalN) {\r\n        return;\r\n      }\r\n      intervalN = startVertical(-1, calculateItemPosition, lastMouse);\r\n    } else if (lastMouse.clientY !== e.clientY) {\r\n      cancelVertical();\r\n    }\r\n  }\r\n\r\n  const elemRightOffset = offsetLeft + offsetWidth - left - width;\r\n  const elemLeftOffset = left - offsetLeft;\r\n\r\n  if (!gridster.$options.disableScrollHorizontal) {\r\n    if (lastMouse.clientX < e.clientX && elemRightOffset <= scrollSensitivity) {\r\n      cancelW();\r\n      if ((resizeEvent && resizeEventType && !resizeEventType.e) || intervalE) {\r\n        return;\r\n      }\r\n      intervalE = startHorizontal(1, calculateItemPosition, lastMouse);\r\n    } else if (lastMouse.clientX > e.clientX && offsetLeft > 0 && elemLeftOffset < scrollSensitivity) {\r\n      cancelE();\r\n      if ((resizeEvent && resizeEventType && !resizeEventType.w) || intervalW) {\r\n        return;\r\n      }\r\n      intervalW = startHorizontal(-1, calculateItemPosition, lastMouse);\r\n    } else if (lastMouse.clientX !== e.clientX) {\r\n      cancelHorizontal();\r\n    }\r\n  }\r\n}\r\n\r\nfunction startVertical(sign: number, calculateItemPosition: Function, lastMouse: any): any {\r\n  let clientY = lastMouse.clientY;\r\n  return setInterval(() => {\r\n    if (!gridsterElement || sign === -1 && gridsterElement.scrollTop - scrollSpeed < 0) {\r\n      cancelVertical();\r\n    }\r\n    gridsterElement.scrollTop += sign * scrollSpeed;\r\n    clientY += sign * scrollSpeed;\r\n    calculateItemPosition({clientX: lastMouse.clientX, clientY: clientY});\r\n  }, intervalDuration);\r\n}\r\n\r\nfunction startHorizontal(sign: number, calculateItemPosition: Function, lastMouse: any): any {\r\n  let clientX = lastMouse.clientX;\r\n  return setInterval(() => {\r\n    if (!gridsterElement || sign === -1 && gridsterElement.scrollLeft - scrollSpeed < 0) {\r\n      cancelHorizontal();\r\n    }\r\n    gridsterElement.scrollLeft += sign * scrollSpeed;\r\n    clientX += sign * scrollSpeed;\r\n    calculateItemPosition({clientX: clientX, clientY: lastMouse.clientY});\r\n  }, intervalDuration);\r\n}\r\n\r\nexport function cancelScroll() {\r\n  cancelHorizontal();\r\n  cancelVertical();\r\n  gridsterElement = undefined;\r\n}\r\n\r\nfunction cancelHorizontal() {\r\n  cancelE();\r\n  cancelW();\r\n}\r\n\r\nfunction cancelVertical() {\r\n  cancelN();\r\n  cancelS();\r\n}\r\n\r\nfunction cancelE() {\r\n  if (intervalE) {\r\n    clearInterval(intervalE);\r\n    intervalE = 0;\r\n  }\r\n}\r\n\r\nfunction cancelW() {\r\n  if (intervalW) {\r\n    clearInterval(intervalW);\r\n    intervalW = 0;\r\n  }\r\n}\r\n\r\nfunction cancelS() {\r\n  if (intervalS) {\r\n    clearInterval(intervalS);\r\n    intervalS = 0;\r\n  }\r\n}\r\n\r\nfunction cancelN() {\r\n  if (intervalN) {\r\n    clearInterval(intervalN);\r\n    intervalN = 0;\r\n  }\r\n}\r\n"]}