1 | /**
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2 | * @license
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3 | * Copyright Google LLC All Rights Reserved.
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4 | *
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5 | * Use of this source code is governed by an MIT-style license that can be
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6 | * found in the LICENSE file at https://angular.io/license
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7 | */
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8 | import { addToArray, removeFromArray } from '../util/array_utils';
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9 | import { Services } from './types';
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10 | import { declaredViewContainer, renderNode, visitRootRenderNodes } from './util';
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11 | export function attachEmbeddedView(parentView, elementData, viewIndex, view) {
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12 | let embeddedViews = elementData.viewContainer._embeddedViews;
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13 | if (viewIndex === null || viewIndex === undefined) {
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14 | viewIndex = embeddedViews.length;
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15 | }
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16 | view.viewContainerParent = parentView;
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17 | addToArray(embeddedViews, viewIndex, view);
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18 | attachProjectedView(elementData, view);
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19 | Services.dirtyParentQueries(view);
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20 | const prevView = viewIndex > 0 ? embeddedViews[viewIndex - 1] : null;
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21 | renderAttachEmbeddedView(elementData, prevView, view);
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22 | }
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23 | function attachProjectedView(vcElementData, view) {
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24 | const dvcElementData = declaredViewContainer(view);
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25 | if (!dvcElementData || dvcElementData === vcElementData ||
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26 | view.state & 16 /* IsProjectedView */) {
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27 | return;
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28 | }
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29 | // Note: For performance reasons, we
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30 | // - add a view to template._projectedViews only 1x throughout its lifetime,
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31 | // and remove it not until the view is destroyed.
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32 | // (hard, as when a parent view is attached/detached we would need to attach/detach all
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33 | // nested projected views as well, even across component boundaries).
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34 | // - don't track the insertion order of views in the projected views array
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35 | // (hard, as when the views of the same template are inserted different view containers)
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36 | view.state |= 16 /* IsProjectedView */;
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37 | let projectedViews = dvcElementData.template._projectedViews;
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38 | if (!projectedViews) {
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39 | projectedViews = dvcElementData.template._projectedViews = [];
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40 | }
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41 | projectedViews.push(view);
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42 | // Note: we are changing the NodeDef here as we cannot calculate
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43 | // the fact whether a template is used for projection during compilation.
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44 | markNodeAsProjectedTemplate(view.parent.def, view.parentNodeDef);
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45 | }
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46 | function markNodeAsProjectedTemplate(viewDef, nodeDef) {
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47 | if (nodeDef.flags & 4 /* ProjectedTemplate */) {
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48 | return;
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49 | }
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50 | viewDef.nodeFlags |= 4 /* ProjectedTemplate */;
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51 | nodeDef.flags |= 4 /* ProjectedTemplate */;
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52 | let parentNodeDef = nodeDef.parent;
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53 | while (parentNodeDef) {
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54 | parentNodeDef.childFlags |= 4 /* ProjectedTemplate */;
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55 | parentNodeDef = parentNodeDef.parent;
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56 | }
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57 | }
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58 | export function detachEmbeddedView(elementData, viewIndex) {
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59 | const embeddedViews = elementData.viewContainer._embeddedViews;
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60 | if (viewIndex == null || viewIndex >= embeddedViews.length) {
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61 | viewIndex = embeddedViews.length - 1;
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62 | }
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63 | if (viewIndex < 0) {
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64 | return null;
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65 | }
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66 | const view = embeddedViews[viewIndex];
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67 | view.viewContainerParent = null;
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68 | removeFromArray(embeddedViews, viewIndex);
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69 | // See attachProjectedView for why we don't update projectedViews here.
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70 | Services.dirtyParentQueries(view);
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71 | renderDetachView(view);
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72 | return view;
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73 | }
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74 | export function detachProjectedView(view) {
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75 | if (!(view.state & 16 /* IsProjectedView */)) {
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76 | return;
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77 | }
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78 | const dvcElementData = declaredViewContainer(view);
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79 | if (dvcElementData) {
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80 | const projectedViews = dvcElementData.template._projectedViews;
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81 | if (projectedViews) {
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82 | removeFromArray(projectedViews, projectedViews.indexOf(view));
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83 | Services.dirtyParentQueries(view);
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84 | }
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85 | }
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86 | }
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87 | export function moveEmbeddedView(elementData, oldViewIndex, newViewIndex) {
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88 | const embeddedViews = elementData.viewContainer._embeddedViews;
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89 | const view = embeddedViews[oldViewIndex];
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90 | removeFromArray(embeddedViews, oldViewIndex);
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91 | if (newViewIndex == null) {
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92 | newViewIndex = embeddedViews.length;
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93 | }
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94 | addToArray(embeddedViews, newViewIndex, view);
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95 | // Note: Don't need to change projectedViews as the order in there
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96 | // as always invalid...
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97 | Services.dirtyParentQueries(view);
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98 | renderDetachView(view);
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99 | const prevView = newViewIndex > 0 ? embeddedViews[newViewIndex - 1] : null;
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100 | renderAttachEmbeddedView(elementData, prevView, view);
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101 | return view;
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102 | }
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103 | function renderAttachEmbeddedView(elementData, prevView, view) {
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104 | const prevRenderNode = prevView ? renderNode(prevView, prevView.def.lastRenderRootNode) : elementData.renderElement;
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105 | const parentNode = view.renderer.parentNode(prevRenderNode);
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106 | const nextSibling = view.renderer.nextSibling(prevRenderNode);
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107 | // Note: We can't check if `nextSibling` is present, as on WebWorkers it will always be!
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108 | // However, browsers automatically do `appendChild` when there is no `nextSibling`.
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109 | visitRootRenderNodes(view, 2 /* InsertBefore */, parentNode, nextSibling, undefined);
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110 | }
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111 | export function renderDetachView(view) {
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112 | visitRootRenderNodes(view, 3 /* RemoveChild */, null, null, undefined);
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113 | }
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embeddedViews[viewIndex! - 1] : null;\n  renderAttachEmbeddedView(elementData, prevView, view);\n}\n\nfunction attachProjectedView(vcElementData: ElementData, view: ViewData) {\n  const dvcElementData = declaredViewContainer(view);\n  if (!dvcElementData || dvcElementData === vcElementData ||\n      view.state & ViewState.IsProjectedView) {\n    return;\n  }\n  // Note: For performance reasons, we\n  // - add a view to template._projectedViews only 1x throughout its lifetime,\n  //   and remove it not until the view is destroyed.\n  //   (hard, as when a parent view is attached/detached we would need to attach/detach all\n  //    nested projected views as well, even across component boundaries).\n  // - don't track the insertion order of views in the projected views array\n  //   (hard, as when the views of the same template are inserted different view containers)\n  view.state |= ViewState.IsProjectedView;\n  let projectedViews = dvcElementData.template._projectedViews;\n  if (!projectedViews) {\n    projectedViews = dvcElementData.template._projectedViews = [];\n  }\n  projectedViews.push(view);\n  // Note: we are changing the NodeDef here as we cannot calculate\n  // the fact whether a template is used for projection during compilation.\n  markNodeAsProjectedTemplate(view.parent!.def, view.parentNodeDef!);\n}\n\nfunction markNodeAsProjectedTemplate(viewDef: ViewDefinition, nodeDef: NodeDef) {\n  if (nodeDef.flags & NodeFlags.ProjectedTemplate) {\n    return;\n  }\n  viewDef.nodeFlags |= NodeFlags.ProjectedTemplate;\n  nodeDef.flags |= NodeFlags.ProjectedTemplate;\n  let parentNodeDef = nodeDef.parent;\n  while (parentNodeDef) {\n    parentNodeDef.childFlags |= NodeFlags.ProjectedTemplate;\n    parentNodeDef = parentNodeDef.parent;\n  }\n}\n\nexport function detachEmbeddedView(elementData: ElementData, viewIndex?: number): ViewData|null {\n  const embeddedViews = elementData.viewContainer!._embeddedViews;\n  if (viewIndex == null || viewIndex >= embeddedViews.length) {\n    viewIndex = embeddedViews.length - 1;\n  }\n  if (viewIndex < 0) {\n    return null;\n  }\n  const view = embeddedViews[viewIndex];\n  view.viewContainerParent = null;\n  removeFromArray(embeddedViews, viewIndex);\n\n  // See attachProjectedView for why we don't update projectedViews here.\n  Services.dirtyParentQueries(view);\n\n  renderDetachView(view);\n\n  return view;\n}\n\nexport function detachProjectedView(view: ViewData) {\n  if (!(view.state & ViewState.IsProjectedView)) {\n    return;\n  }\n  const dvcElementData = declaredViewContainer(view);\n  if (dvcElementData) {\n    const projectedViews = dvcElementData.template._projectedViews;\n    if (projectedViews) {\n      removeFromArray(projectedViews, projectedViews.indexOf(view));\n      Services.dirtyParentQueries(view);\n    }\n  }\n}\n\nexport function moveEmbeddedView(\n    elementData: ElementData, oldViewIndex: number, newViewIndex: number): ViewData {\n  const embeddedViews = elementData.viewContainer!._embeddedViews;\n  const view = embeddedViews[oldViewIndex];\n  removeFromArray(embeddedViews, oldViewIndex);\n  if (newViewIndex == null) {\n    newViewIndex = embeddedViews.length;\n  }\n  addToArray(embeddedViews, newViewIndex, view);\n\n  // Note: Don't need to change projectedViews as the order in there\n  // as always invalid...\n\n  Services.dirtyParentQueries(view);\n\n  renderDetachView(view);\n  const prevView = newViewIndex > 0 ? embeddedViews[newViewIndex - 1] : null;\n  renderAttachEmbeddedView(elementData, prevView, view);\n\n  return view;\n}\n\nfunction renderAttachEmbeddedView(\n    elementData: ElementData, prevView: ViewData|null, view: ViewData) {\n  const prevRenderNode =\n      prevView ? renderNode(prevView, prevView.def.lastRenderRootNode!) : elementData.renderElement;\n  const parentNode = view.renderer.parentNode(prevRenderNode);\n  const nextSibling = view.renderer.nextSibling(prevRenderNode);\n  // Note: We can't check if `nextSibling` is present, as on WebWorkers it will always be!\n  // However, browsers automatically do `appendChild` when there is no `nextSibling`.\n  visitRootRenderNodes(view, RenderNodeAction.InsertBefore, parentNode, nextSibling, undefined);\n}\n\nexport function renderDetachView(view: ViewData) {\n  visitRootRenderNodes(view, RenderNodeAction.RemoveChild, null, null, undefined);\n}\n"]} |
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