-
Notifications
You must be signed in to change notification settings - Fork 45
/
layout.tsx
325 lines (299 loc) · 11.5 KB
/
layout.tsx
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
/*******************************************************************************
* Copyright (c) 2023 Obeo.
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
import { ApolloClient, InMemoryCache } from '@apollo/client/core';
import { ApolloProvider } from '@apollo/client/react';
import { MessageOptions, ServerContext, ToastContext, theme } from '@eclipse-sirius/sirius-components-core';
import { ThemeProvider } from '@material-ui/core/styles';
import { Fragment, createElement } from 'react';
import ReactDOM from 'react-dom';
import { Node, ReactFlowProvider } from 'reactflow';
import { GQLReferencePosition } from '../../graphql/subscription/diagramEventSubscription.types';
import { NodeData } from '../DiagramRenderer.types';
import { Label } from '../Label';
import { DiagramDirectEditContextProvider } from '../direct-edit/DiagramDirectEditContext';
import { FreeFormNode } from '../node/FreeFormNode';
import { FreeFormNodeData } from '../node/FreeFormNode.types';
import { ListNode } from '../node/ListNode';
import { ListNodeData } from '../node/ListNode.types';
import { DiagramNodeType } from '../node/NodeTypes.types';
import { LayoutEngine } from './LayoutEngine';
import { ILayoutEngine, INodeLayoutHandler } from './LayoutEngine.types';
import { computePreviousPosition } from './bounds';
import { RawDiagram } from './layout.types';
import { isEastBorderNode, isWestBorderNode } from './layoutBorderNodes';
import { getChildren } from './layoutNode';
const emptyNodeProps = {
selected: false,
isConnectable: true,
dragging: false,
xPos: 0,
yPos: 0,
zIndex: -1,
};
const emptyListNodeProps = {
...emptyNodeProps,
type: 'listNode',
};
const emptyRectangularNodeProps = {
...emptyNodeProps,
type: 'rectangularNode',
};
const isListNode = (node: Node<NodeData>): node is Node<ListNodeData> => node.type === 'listNode';
const isRectangularNode = (node: Node<NodeData>): node is Node<FreeFormNodeData> => node.type === 'rectangularNode';
export const prepareLayoutArea = (
diagram: RawDiagram,
renderCallback: () => void,
httpOrigin: string
): HTMLDivElement => {
const hiddenContainer: HTMLDivElement = document.createElement('div');
hiddenContainer.id = 'hidden-container';
hiddenContainer.style.display = 'inline-block';
hiddenContainer.style.position = 'absolute';
hiddenContainer.style.visibility = 'hidden';
hiddenContainer.style.zIndex = '-1';
document.body.appendChild(hiddenContainer);
const elements: JSX.Element[] = [];
const visibleNodes = diagram.nodes.filter((node) => !node.hidden);
// Render all label first
/**
* WARN: The height label computed in the hidden-container will be slightly different from the label rendered in the reactflow diagram.
* This difference is due to the line-height which is set in `variables.css` to 1.5 globaly but in `reset.css` the line-height is
* overridden to `normal` for element with [role=button] which seem to be the case for all reactflow nodes.
* That should not impact the node size since it is calculated with the higher value of line-height.
*/
const labelElements: JSX.Element[] = [];
visibleNodes.forEach((node, index) => {
if (hiddenContainer && node.data.insideLabel) {
const children: JSX.Element[] = [
createElement(Label, {
diagramElementId: node.id,
label: node.data.insideLabel,
faded: false,
transform: '',
key: node.data.insideLabel.id,
}),
];
const element: JSX.Element = createElement('div', {
id: `${node.id}-label-${index}`,
key: `${node.id}-label-${index}`,
children,
});
labelElements.push(element);
}
if (hiddenContainer && Object.keys(node.data.outsideLabels).find((key) => key.startsWith('BOTTOM_'))) {
const outsideLabels = node.data.outsideLabels;
if (outsideLabels.BOTTOM_BEGIN) {
const children: JSX.Element[] = [
createElement(Label, {
diagramElementId: node.id,
label: outsideLabels.BOTTOM_BEGIN,
faded: false,
transform: '',
key: outsideLabels.BOTTOM_BEGIN.id,
}),
];
const element: JSX.Element = createElement('div', {
id: `${node.id}-outside-label-BOTTOM_BEGIN-${index}`,
key: `${node.id}-outside-label-BOTTOM_BEGIN-${index}`,
children,
});
labelElements.push(element);
}
if (outsideLabels.BOTTOM_MIDDLE) {
const children: JSX.Element[] = [
createElement(Label, {
diagramElementId: node.id,
label: outsideLabels.BOTTOM_MIDDLE,
faded: false,
transform: '',
key: outsideLabels.BOTTOM_MIDDLE.id,
}),
];
const element: JSX.Element = createElement('div', {
id: `${node.id}-outside-label-BOTTOM_MIDDLE-${index}`,
key: `${node.id}-outside-label-BOTTOM_MIDDLE-${index}`,
children,
});
labelElements.push(element);
}
if (outsideLabels.BOTTOM_END) {
const children: JSX.Element[] = [
createElement(Label, {
diagramElementId: node.id,
label: outsideLabels.BOTTOM_END,
faded: false,
transform: '',
key: outsideLabels.BOTTOM_END.id,
}),
];
const element: JSX.Element = createElement('div', {
id: `${node.id}-outside-label-BOTTOM_END-${index}`,
key: `${node.id}-outside-label-BOTTOM_END-${index}`,
children,
});
labelElements.push(element);
}
}
});
// The container used to render label is a flex container authorizing wrapping.
// It wrap direct children, and thus, prevent label to wrap (because their container will have always enough place to render on the line, unless the label is larger than the screen).
const labelContainerElement: JSX.Element = createElement('div', {
id: 'hidden-label-container',
key: 'hidden-label-container',
style: {
display: 'flex',
flexWrap: 'wrap',
alignItems: 'flex-start',
},
children: labelElements,
});
elements.push(labelContainerElement);
const nodeElements: JSX.Element[] = [];
visibleNodes.forEach((node, index) => {
if (hiddenContainer && node) {
const children: JSX.Element[] = [];
if (isRectangularNode(node)) {
const element = createElement(FreeFormNode, {
...emptyRectangularNodeProps,
id: node.id,
data: node.data,
key: `${node.id}-${index}`,
});
children.push(element);
}
if (isListNode(node)) {
const element = createElement(ListNode, {
...emptyListNodeProps,
id: node.id,
data: node.data,
key: `${node.id}-${index}`,
});
children.push(element);
}
if (children.length > 0) {
const elementWrapper: JSX.Element = createElement('div', {
id: `${node.id}-${node.type}-${index}`,
key: node.id,
children,
});
nodeElements.push(elementWrapper);
}
}
});
const nodeContainerElement: JSX.Element = createElement('div', {
id: 'hidden-node-container',
key: 'hidden-node-container',
style: {
display: 'flex',
flexWrap: 'wrap',
alignItems: 'flex-start',
},
children: nodeElements,
});
elements.push(nodeContainerElement);
const hiddenContainerContentElements: JSX.Element = createElement(Fragment, { children: elements });
const element = (
<ReactFlowProvider>
<ApolloProvider client={new ApolloClient({ cache: new InMemoryCache(), uri: '' })}>
<ThemeProvider theme={theme}>
<ServerContext.Provider value={{ httpOrigin }}>
<ToastContext.Provider
value={{
enqueueSnackbar: (_body: string, _options?: MessageOptions) => {},
}}>
<DiagramDirectEditContextProvider>{hiddenContainerContentElements}</DiagramDirectEditContextProvider>
</ToastContext.Provider>
</ServerContext.Provider>
</ThemeProvider>
</ApolloProvider>
</ReactFlowProvider>
);
ReactDOM.render(element, hiddenContainer, renderCallback);
return hiddenContainer;
};
export const cleanLayoutArea = (container: HTMLDivElement) => {
if (container?.parentNode) {
container.parentNode.removeChild(container);
}
};
const gap = 20;
export const layout = (
previousDiagram: RawDiagram | null,
diagram: RawDiagram,
referencePosition: GQLReferencePosition | null,
nodeLayoutHandlerContributions: INodeLayoutHandler<NodeData>[]
): RawDiagram => {
layoutDiagram(previousDiagram, diagram, referencePosition, nodeLayoutHandlerContributions);
return diagram;
};
const layoutDiagram = (
previousDiagram: RawDiagram | null,
diagram: RawDiagram,
referencePosition: GQLReferencePosition | null,
nodeLayoutHandlerContributions: INodeLayoutHandler<NodeData>[]
) => {
const allVisibleNodes = diagram.nodes.filter((node) => !node.hidden);
const nodesToLayout = allVisibleNodes.filter((node) => !node.parentNode);
const layoutEngine: ILayoutEngine = new LayoutEngine();
nodeLayoutHandlerContributions.forEach((nodeLayoutHandler) =>
layoutEngine.registerNodeLayoutHandlerContribution(nodeLayoutHandler)
);
let newlyAddedNode: Node<NodeData, DiagramNodeType> | undefined = undefined;
if (referencePosition) {
newlyAddedNode = allVisibleNodes
.filter((node) => !previousDiagram?.nodes.map((n) => n.id).find((n) => n === node.id))
.find((node) => {
if (node.parentNode) {
return referencePosition.parentId === node.parentNode;
}
return !referencePosition.parentId || referencePosition.parentId === '';
});
if (newlyAddedNode) {
newlyAddedNode = { ...newlyAddedNode, position: referencePosition.position };
}
}
layoutEngine.layoutNodes(previousDiagram, allVisibleNodes, nodesToLayout, newlyAddedNode);
// Update position of root nodes
nodesToLayout.forEach((node, index) => {
const previousNode = (previousDiagram?.nodes ?? []).find((previousNode) => previousNode.id === node.id);
const previousPosition = computePreviousPosition(previousNode, node);
const createdNode = newlyAddedNode?.id === node.id ? newlyAddedNode : undefined;
if (!!createdNode) {
node.position = createdNode.position;
} else if (previousPosition) {
node.position = previousPosition;
} else {
const maxBorderNodeWidthWest = getChildren(node, allVisibleNodes)
.filter(isWestBorderNode)
.map((borderNode) => borderNode.width || 0)
.reduce((a, b) => Math.max(a, b), 0);
node.position = { x: 0, y: 0 };
const previousSibling = nodesToLayout[index - 1];
if (previousSibling) {
const previousSiblingMaxBorderNodeWidthEast = getChildren(previousSibling, allVisibleNodes)
.filter(isEastBorderNode)
.map((borderNode) => borderNode.width || 0)
.reduce((a, b) => Math.max(a, b), 0);
node.position = {
x:
previousSibling.position.x +
maxBorderNodeWidthWest +
previousSiblingMaxBorderNodeWidthEast +
(previousSibling.width ?? 0) +
gap,
y: 0,
};
}
}
});
};