@yoyoboot/l-52abp-ng-form-generator
Version:
This library was generated with [Angular CLI](https://github.com/angular/angular-cli) version 12.2.0.
108 lines • 16.5 kB
JavaScript
export const DROP_EFFECTS = ["move", "copy", "link"];
export const CUSTOM_MIME_TYPE = "application/x-dnd";
export const JSON_MIME_TYPE = "application/json";
export const MSIE_MIME_TYPE = "Text";
export function mimeTypeIsCustom(mimeType) {
return mimeType.substr(0, CUSTOM_MIME_TYPE.length) === CUSTOM_MIME_TYPE;
}
export function getWellKnownMimeType(event) {
if (event.dataTransfer) {
const types = event.dataTransfer.types;
// IE 9 workaround.
if (!types) {
return MSIE_MIME_TYPE;
}
for (let i = 0; i < types.length; i++) {
if (types[i] === MSIE_MIME_TYPE
|| types[i] === JSON_MIME_TYPE
|| mimeTypeIsCustom(types[i])) {
return types[i];
}
}
}
return null;
}
export function setDragData(event, data, effectAllowed) {
// Internet Explorer and Microsoft Edge don't support custom mime types, see design doc:
// https://github.com/marceljuenemann/angular-drag-and-drop-lists/wiki/Data-Transfer-Design
const mimeType = CUSTOM_MIME_TYPE + (data.type ? ("-" + data.type) : "");
const dataString = JSON.stringify(data);
try {
event.dataTransfer.setData(mimeType, dataString);
}
catch (e) {
// Setting a custom MIME type did not work, we are probably in IE or Edge.
try {
event.dataTransfer.setData(JSON_MIME_TYPE, dataString);
}
catch (e) {
// We are in Internet Explorer and can only use the Text MIME type. Also note that IE
// does not allow changing the cursor in the dragover event, therefore we have to choose
// the one we want to display now by setting effectAllowed.
const effectsAllowed = filterEffects(DROP_EFFECTS, effectAllowed);
event.dataTransfer.effectAllowed = effectsAllowed[0];
event.dataTransfer.setData(MSIE_MIME_TYPE, dataString);
}
}
}
export function getDropData(event, dragIsExternal) {
// check if the mime type is well known
const mimeType = getWellKnownMimeType(event);
// drag did not originate from [dndDraggable]
if (dragIsExternal === true) {
if (mimeType !== null
&& mimeTypeIsCustom(mimeType)) {
// the type of content is well known and safe to handle
return JSON.parse(event.dataTransfer.getData(mimeType));
}
// the contained data is unknown, let user handle it
return {};
}
// the type of content is well known and safe to handle
return JSON.parse(event.dataTransfer.getData(mimeType));
}
export function filterEffects(effects, allowed) {
if (allowed === "all"
|| allowed === "uninitialized") {
return effects;
}
return effects.filter(function (effect) {
return allowed.toLowerCase().indexOf(effect) !== -1;
});
}
export function getDirectChildElement(parentElement, childElement) {
let directChild = childElement;
while (directChild.parentNode !== parentElement) {
// reached root node without finding given parent
if (!directChild.parentNode) {
return null;
}
directChild = directChild.parentNode;
}
return directChild;
}
export function shouldPositionPlaceholderBeforeElement(event, element, horizontal) {
const bounds = element.getBoundingClientRect();
// If the pointer is in the upper half of the list item element,
// we position the placeholder before the list item, otherwise after it.
if (horizontal) {
return (event.clientX < bounds.left + bounds.width / 2);
}
return (event.clientY < bounds.top + bounds.height / 2);
}
export function calculateDragImageOffset(event, dragImage) {
const dragImageComputedStyle = window.getComputedStyle(dragImage);
const paddingTop = parseFloat(dragImageComputedStyle.paddingTop) || 0;
const paddingLeft = parseFloat(dragImageComputedStyle.paddingLeft) || 0;
const borderTop = parseFloat(dragImageComputedStyle.borderTopWidth) || 0;
const borderLeft = parseFloat(dragImageComputedStyle.borderLeftWidth) || 0;
return {
x: event.offsetX + paddingLeft + borderLeft,
y: event.offsetY + paddingTop + borderTop
};
}
export function setDragImage(event, dragImage, offsetFunction) {
const offset = offsetFunction(event, dragImage) || { x: 0, y: 0 };
event.dataTransfer.setDragImage(dragImage, offset.x, offset.y);
}
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i < types.length; i++ ) {\n\n      if( types[ i ] === MSIE_MIME_TYPE\n        || types[ i ] === JSON_MIME_TYPE\n        || mimeTypeIsCustom( types[ i ] ) ) {\n\n        return types[ i ];\n      }\n    }\n  }\n\n  return null;\n}\n\nexport function setDragData( event:DragEvent, data:DragDropData, effectAllowed:EffectAllowed ):void {\n\n  // Internet Explorer and Microsoft Edge don't support custom mime types, see design doc:\n  // https://github.com/marceljuenemann/angular-drag-and-drop-lists/wiki/Data-Transfer-Design\n  const mimeType = CUSTOM_MIME_TYPE + (data.type ? (\"-\" + data.type) : \"\");\n\n  const dataString = JSON.stringify( data );\n\n  try {\n\n    event.dataTransfer.setData( mimeType, dataString );\n\n  }\n  catch( e ) {\n\n    //   Setting a custom MIME type did not work, we are probably in IE or Edge.\n    try {\n\n      event.dataTransfer.setData( JSON_MIME_TYPE, dataString );\n\n    }\n    catch( e ) {\n\n      //   We are in Internet Explorer and can only use the Text MIME type. Also note that IE\n      //   does not allow changing the cursor in the dragover event, therefore we have to choose\n      //   the one we want to display now by setting effectAllowed.\n      const effectsAllowed = filterEffects( DROP_EFFECTS, effectAllowed );\n      event.dataTransfer.effectAllowed = effectsAllowed[ 0 ];\n\n      event.dataTransfer.setData( MSIE_MIME_TYPE, dataString );\n    }\n  }\n}\n\nexport function getDropData( event:DragEvent, dragIsExternal:boolean ):DragDropData {\n\n  // check if the mime type is well known\n  const mimeType = getWellKnownMimeType( event );\n\n  // drag did not originate from [dndDraggable]\n  if( dragIsExternal === true ) {\n\n    if( mimeType !== null\n      && mimeTypeIsCustom( mimeType ) ) {\n\n      // the type of content is well known and safe to handle\n      return JSON.parse( event.dataTransfer.getData( mimeType ) );\n    }\n\n    // the contained data is unknown, let user handle it\n    return {};\n  }\n\n  // the type of content is well known and safe to handle\n  return JSON.parse( event.dataTransfer.getData( mimeType ) );\n}\n\nexport function filterEffects( effects:DropEffect[], allowed:EffectAllowed | DropEffect ):DropEffect[] {\n\n  if( allowed === \"all\"\n    || allowed === \"uninitialized\" ) {\n\n    return effects;\n  }\n\n  return effects.filter( function( effect ) {\n\n    return allowed.toLowerCase().indexOf( effect ) !== -1;\n  } );\n}\n\nexport function getDirectChildElement( parentElement:Element, childElement:Element ):Element | null {\n\n  let directChild:Node = childElement;\n\n  while( directChild.parentNode !== parentElement ) {\n\n    // reached root node without finding given parent\n    if( !directChild.parentNode ) {\n\n      return null;\n    }\n\n    directChild = directChild.parentNode;\n  }\n\n  return directChild as Element;\n}\n\nexport function shouldPositionPlaceholderBeforeElement( event:DragEvent, element:Element, horizontal:boolean ) {\n\n  const bounds = element.getBoundingClientRect();\n\n  // If the pointer is in the upper half of the list item element,\n  // we position the placeholder before the list item, otherwise after it.\n  if( horizontal ) {\n\n    return (event.clientX < bounds.left + bounds.width / 2);\n  }\n\n  return (event.clientY < bounds.top + bounds.height / 2);\n}\n\nexport function calculateDragImageOffset( event:DragEvent, dragImage:Element ):{ x:number, y:number } {\n\n  const dragImageComputedStyle = window.getComputedStyle( dragImage );\n  const paddingTop = parseFloat( dragImageComputedStyle.paddingTop ) || 0;\n  const paddingLeft = parseFloat( dragImageComputedStyle.paddingLeft ) || 0;\n  const borderTop = parseFloat( dragImageComputedStyle.borderTopWidth ) || 0;\n  const borderLeft = parseFloat( dragImageComputedStyle.borderLeftWidth ) || 0;\n\n  return {\n    x: event.offsetX + paddingLeft + borderLeft,\n    y: event.offsetY + paddingTop + borderTop\n  };\n}\n\nexport function setDragImage( event:DragEvent, dragImage:Element, offsetFunction:DndDragImageOffsetFunction ):void {\n\n  const offset = offsetFunction( event, dragImage ) || {x: 0, y: 0};\n\n  (event.dataTransfer as any).setDragImage( dragImage, offset.x, offset.y );\n}\n"]}