feat: Support mermaid flowchart and sequence diagrams to excalidraw diagrams 🥳 (#6920)
* feat: integrate mermaidToExcalidraw * create mermaid to excal dialog * allow mermaid syntax and export in preview * fix * fix webpack config * fix markdown error by using named export * center preview * set elements as selected when inserted onto canvas * persist mermaid data to storage * store canvas data in refs * load mermaid lazily * tweak design * compute width, height correctly for arrows * fix undefined vertex issue * add mermaid icon in dropdown * add a note in dialog * reset preview when error * show error in preview when error * show mermaid error messgae react way * design tweaks * add example and docs link * fix * tweak design to remove scroll bar * show a spinner unless mermaid loaded * regenerate ids when needed via programmatic api, this makes sure for mermaid diagrams ids are regenerated * tweak * add option to transform viewport to scene coords in transform api * make opts optional and use 100% zoom when inserting to canvas * fix arrow bindings in safari and firefox * fix elements insert position and viewport centering * fix: Update start/end points by 0.5 so bindings don't overlap with start/end bound element coordinates. * defer rendering the preview * tweak text * fix tests * remove only * make design responsive * fix: show extra tools dropdown in mobile * fix mobile css * width auto * upgrade mermaid-to-excalidraw * don't pass appState in deps as its not used * upgrade mermaid-to-excalidraw to fix firefox issue * use types from mermaid-to-excalidraw * upgrade mermaid-to-excalidraw * use stable version of mermaid-to-excalidraw * upgrade mermaid-to-excalidraw * fix width of shapes toolbar for smaller screen size and also fix regression of mobile menu * use i18n * better api * enable test coverage in ui * Add tests * use common utils to update and get text editor * updgrade mermaid-to-excalidraw to support sequence diagrams * fix test * don't update arrow container height anytime in when redrawing text bounding box * increase size limit * increase size limit of vendor to 900kb * use openDialog for mermaid * upgrade mermaid-to-excalidraw * update frame id post generation * upgrade mermaid-to-excalidraw to add entity codes support * update size limit * upgrade mermaid-to-excalidraw package with frame api changes * upgrade mermaid-to-excalidraw to remove directive and use config * don't highlight mermaid tool and remove unused api setSelection * stop using loading state to update text area * move some styling to scss * review fixes * use modifiedTableIcon props and remove stale snap * css * dialog css * fix snap * use dialog border * change mermaidToExcalidrawLib to state * better styling of errors * make modal bigger * fix mobile * update snaps * fix icon color * fix dark mode insert button color * horizontally center spinner * render canvas conditionally on loaded state * rd tweaks * tweak class names * remove max height * typo in example * upgrade mermaid-to-excalidraw * simplify error state * fix height & overflow on vertical breakpoint * fix lint * show errors in overlay * set textarea font family * reduce opacity * update snap * upgrade to mermaid 0.1.2 --------- Co-authored-by: dwelle <luzar.david@gmail.com>pull/6995/head^2
Aakansha Doshi
1 year ago
committed by
GitHub
parent
a7db41c5ba
commit
e8def8da8d
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@import "../css/variables.module";
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$verticalBreakpoint: 860px;
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.excalidraw {
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.dialog-mermaid {
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&-title {
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margin-bottom: 5px;
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margin-top: 2px;
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}
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&-desc {
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font-size: 15px;
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font-style: italic;
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font-weight: 500;
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}
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.Modal__content .Island {
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box-shadow: none;
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}
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@at-root .excalidraw:not(.excalidraw--mobile)#{&} {
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padding: 1.25rem;
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.Modal__content {
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height: 100%;
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max-height: 750px;
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@media screen and (max-width: $verticalBreakpoint) {
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height: auto;
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// When vertical, we want the height to span whole viewport.
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// This is also important for the children not to overflow the
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// modal/viewport (for some reason).
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max-height: 100%;
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}
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.Island {
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height: 100%;
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display: flex;
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flex-direction: column;
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flex: 1 1 auto;
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.Dialog__content {
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display: flex;
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flex: 1 1 auto;
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}
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}
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}
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}
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}
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.dialog-mermaid-body {
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width: 100%;
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display: grid;
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grid-template-columns: 1fr 1fr;
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grid-template-rows: 1fr auto;
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height: 100%;
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column-gap: 4rem;
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@media screen and (max-width: $verticalBreakpoint) {
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flex-direction: column;
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display: flex;
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gap: 1rem;
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}
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}
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.dialog-mermaid-panels {
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display: grid;
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width: 100%;
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grid-template-columns: 1fr 1fr;
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justify-content: space-between;
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gap: 4rem;
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grid-row: 1;
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grid-column: 1 / 3;
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@media screen and (max-width: $verticalBreakpoint) {
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flex-direction: column;
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display: flex;
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gap: 1rem;
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}
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label {
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font-size: 14px;
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font-style: normal;
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font-weight: 600;
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margin-bottom: 4px;
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margin-left: 4px;
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@media screen and (max-width: $verticalBreakpoint) {
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margin-top: 4px;
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}
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}
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&-text {
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display: flex;
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flex-direction: column;
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textarea {
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width: 20rem;
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height: 100%;
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resize: none;
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border-radius: var(--border-radius-lg);
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border: 1px solid var(--dialog-border-color);
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white-space: pre-wrap;
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padding: 0.85rem;
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box-sizing: border-box;
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width: 100%;
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font-family: monospace;
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@media screen and (max-width: $verticalBreakpoint) {
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width: auto;
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height: 10rem;
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}
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}
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}
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&-preview-wrapper {
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display: flex;
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align-items: center;
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justify-content: center;
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padding: 0.85rem;
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box-sizing: border-box;
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width: 100%;
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// acts as min-height
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height: 200px;
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flex-grow: 1;
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position: relative;
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background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAMUlEQVQ4T2NkYGAQYcAP3uCTZhw1gGGYhAGBZIA/nYDCgBDAm9BGDWAAJyRCgLaBCAAgXwixzAS0pgAAAABJRU5ErkJggg==")
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left center;
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border-radius: var(--border-radius-lg);
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border: 1px solid var(--dialog-border-color);
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@media screen and (max-width: $verticalBreakpoint) {
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// acts as min-height
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height: 400px;
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width: auto;
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}
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canvas {
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max-width: 100%;
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max-height: 100%;
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}
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}
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&-preview-canvas-container {
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display: flex;
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width: 100%;
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height: 100%;
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align-items: center;
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justify-content: center;
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flex-grow: 1;
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}
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&-preview {
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display: flex;
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flex-direction: column;
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}
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.mermaid-error {
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color: red;
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font-weight: 800;
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font-size: 30px;
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word-break: break-word;
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overflow: auto;
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max-height: 100%;
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height: 100%;
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width: 100%;
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text-align: center;
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position: absolute;
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z-index: 10;
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p {
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font-weight: 500;
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font-family: Cascadia;
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text-align: left;
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white-space: pre-wrap;
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font-size: 0.875rem;
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padding: 0 10px;
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}
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}
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}
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.dialog-mermaid-buttons {
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grid-column: 2;
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.dialog-mermaid-insert {
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&.excalidraw-button {
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font-family: "Assistant";
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font-weight: 600;
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height: 2.5rem;
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margin-top: 1em;
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margin-bottom: 0.3em;
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width: 7.5rem;
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font-size: 12px;
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color: $oc-white;
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background-color: var(--color-primary);
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&:hover {
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background-color: var(--color-primary-darker);
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}
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&:active {
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background-color: var(--color-primary-darkest);
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}
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@media screen and (max-width: $verticalBreakpoint) {
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width: 100%;
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}
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@at-root .excalidraw.theme--dark#{&} {
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color: var(--color-gray-100);
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}
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}
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span {
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padding-left: 0.5rem;
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display: flex;
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}
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}
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}
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}
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@ -0,0 +1,243 @@
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import { useState, useRef, useEffect, useDeferredValue } from "react";
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import { BinaryFiles } from "../types";
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import { useApp } from "./App";
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import { Button } from "./Button";
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import { Dialog } from "./Dialog";
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import { DEFAULT_EXPORT_PADDING, DEFAULT_FONT_SIZE } from "../constants";
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import {
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convertToExcalidrawElements,
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exportToCanvas,
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} from "../packages/excalidraw/index";
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import { NonDeletedExcalidrawElement } from "../element/types";
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import { canvasToBlob } from "../data/blob";
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import { ArrowRightIcon } from "./icons";
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import Spinner from "./Spinner";
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import "./MermaidToExcalidraw.scss";
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import { MermaidToExcalidrawResult } from "@excalidraw/mermaid-to-excalidraw/dist/interfaces";
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import type { MermaidOptions } from "@excalidraw/mermaid-to-excalidraw";
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import { t } from "../i18n";
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import Trans from "./Trans";
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const LOCAL_STORAGE_KEY_MERMAID_TO_EXCALIDRAW = "mermaid-to-excalidraw";
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const MERMAID_EXAMPLE =
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"flowchart TD\n A[Christmas] -->|Get money| B(Go shopping)\n B --> C{Let me think}\n C -->|One| D[Laptop]\n C -->|Two| E[iPhone]\n C -->|Three| F[Car]";
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const saveMermaidDataToStorage = (data: string) => {
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try {
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localStorage.setItem(LOCAL_STORAGE_KEY_MERMAID_TO_EXCALIDRAW, data);
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} catch (error: any) {
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// Unable to access window.localStorage
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console.error(error);
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}
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};
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const importMermaidDataFromStorage = () => {
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try {
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const data = localStorage.getItem(LOCAL_STORAGE_KEY_MERMAID_TO_EXCALIDRAW);
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if (data) {
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return data;
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}
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} catch (error: any) {
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// Unable to access localStorage
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console.error(error);
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}
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return null;
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};
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const ErrorComp = ({ error }: { error: string }) => {
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return (
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<div data-testid="mermaid-error" className="mermaid-error">
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Error! <p>{error}</p>
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</div>
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);
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};
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const MermaidToExcalidraw = () => {
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const [mermaidToExcalidrawLib, setMermaidToExcalidrawLib] = useState<{
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loaded: boolean;
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api: {
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parseMermaidToExcalidraw: (
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defination: string,
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options: MermaidOptions,
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) => Promise<MermaidToExcalidrawResult>;
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} | null;
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}>({ loaded: false, api: null });
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const [text, setText] = useState("");
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const deferredText = useDeferredValue(text.trim());
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const [error, setError] = useState(null);
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const canvasRef = useRef<HTMLDivElement>(null);
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const data = useRef<{
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elements: readonly NonDeletedExcalidrawElement[];
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files: BinaryFiles | null;
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}>({ elements: [], files: null });
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const app = useApp();
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const resetPreview = () => {
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const canvasNode = canvasRef.current;
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if (!canvasNode) {
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return;
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}
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const parent = canvasNode.parentElement;
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if (!parent) {
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return;
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}
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parent.style.background = "";
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setError(null);
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canvasNode.replaceChildren();
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};
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useEffect(() => {
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const loadMermaidToExcalidrawLib = async () => {
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const api = await import(
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/* webpackChunkName:"mermaid-to-excalidraw" */ "@excalidraw/mermaid-to-excalidraw"
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);
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setMermaidToExcalidrawLib({ loaded: true, api });
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};
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loadMermaidToExcalidrawLib();
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}, []);
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useEffect(() => {
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const data = importMermaidDataFromStorage() || MERMAID_EXAMPLE;
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setText(data);
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}, []);
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useEffect(() => {
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const renderExcalidrawPreview = async () => {
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const canvasNode = canvasRef.current;
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const parent = canvasNode?.parentElement;
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if (
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!mermaidToExcalidrawLib.loaded ||
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!canvasNode ||
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!parent ||
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!mermaidToExcalidrawLib.api
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) {
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return;
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}
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if (!deferredText) {
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resetPreview();
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return;
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}
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try {
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const { elements, files } =
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await mermaidToExcalidrawLib.api.parseMermaidToExcalidraw(
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deferredText,
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{
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fontSize: DEFAULT_FONT_SIZE,
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},
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);
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setError(null);
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data.current = {
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elements: convertToExcalidrawElements(elements, {
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regenerateIds: true,
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}),
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files,
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};
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const canvas = await exportToCanvas({
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elements: data.current.elements,
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files: data.current.files,
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exportPadding: DEFAULT_EXPORT_PADDING,
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maxWidthOrHeight:
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Math.max(parent.offsetWidth, parent.offsetHeight) *
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window.devicePixelRatio,
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});
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// if converting to blob fails, there's some problem that will
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// likely prevent preview and export (e.g. canvas too big)
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await canvasToBlob(canvas);
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parent.style.background = "var(--default-bg-color)";
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canvasNode.replaceChildren(canvas);
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} catch (e: any) {
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parent.style.background = "var(--default-bg-color)";
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if (deferredText) {
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setError(e.message);
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}
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}
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};
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renderExcalidrawPreview();
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}, [deferredText, mermaidToExcalidrawLib]);
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const onClose = () => {
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app.setOpenDialog(null);
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saveMermaidDataToStorage(text);
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};
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const onSelect = () => {
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const { elements: newElements, files } = data.current;
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app.addElementsFromPasteOrLibrary({
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elements: newElements,
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files,
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position: "center",
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fitToContent: true,
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});
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onClose();
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};
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return (
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<Dialog
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className="dialog-mermaid"
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onCloseRequest={onClose}
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size={1200}
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title={
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<>
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<p className="dialog-mermaid-title">{t("mermaid.title")}</p>
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<span className="dialog-mermaid-desc">
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<Trans
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i18nKey="mermaid.description"
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flowchartLink={(el) => (
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<a href="https://mermaid.js.org/syntax/flowchart.html">{el}</a>
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)}
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sequenceLink={(el) => (
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<a href="https://mermaid.js.org/syntax/sequenceDiagram.html">
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{el}
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</a>
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)}
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/>
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<br />
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</span>
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</>
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}
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>
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<div className="dialog-mermaid-body">
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<div className="dialog-mermaid-panels">
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<div className="dialog-mermaid-panels-text">
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<label>{t("mermaid.syntax")}</label>
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<textarea
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onChange={(event) => setText(event.target.value)}
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value={text}
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/>
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</div>
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<div className="dialog-mermaid-panels-preview">
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<label>{t("mermaid.preview")}</label>
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<div className="dialog-mermaid-panels-preview-wrapper">
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{error && <ErrorComp error={error} />}
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{mermaidToExcalidrawLib.loaded ? (
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<div
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ref={canvasRef}
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style={{ opacity: error ? "0.15" : 1 }}
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className="dialog-mermaid-panels-preview-canvas-container"
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/>
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) : (
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<Spinner size="2rem" />
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)}
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</div>
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</div>
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</div>
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<div className="dialog-mermaid-buttons">
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<Button className="dialog-mermaid-insert" onSelect={onSelect}>
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{t("mermaid.button")}
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<span>{ArrowRightIcon}</span>
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</Button>
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</div>
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</div>
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</Dialog>
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);
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};
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export default MermaidToExcalidraw;
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File diff suppressed because it is too large
Load Diff
@ -0,0 +1,167 @@
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import { act, fireEvent, render } from "./test-utils";
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import { Excalidraw } from "../packages/excalidraw/index";
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import React from "react";
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import { expect, vi } from "vitest";
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import * as MermaidToExcalidraw from "@excalidraw/mermaid-to-excalidraw";
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import { getTextEditor, updateTextEditor } from "./queries/dom";
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||||
vi.mock("@excalidraw/mermaid-to-excalidraw", async (importActual) => {
|
||||
const module = (await importActual()) as any;
|
||||
|
||||
return {
|
||||
__esModule: true,
|
||||
...module,
|
||||
};
|
||||
});
|
||||
const parseMermaidToExcalidrawSpy = vi.spyOn(
|
||||
MermaidToExcalidraw,
|
||||
"parseMermaidToExcalidraw",
|
||||
);
|
||||
|
||||
parseMermaidToExcalidrawSpy.mockImplementation(
|
||||
async (
|
||||
definition: string,
|
||||
options?: MermaidToExcalidraw.MermaidOptions | undefined,
|
||||
) => {
|
||||
const firstLine = definition.split("\n")[0];
|
||||
return new Promise((resolve, reject) => {
|
||||
if (firstLine === "flowchart TD") {
|
||||
resolve({
|
||||
elements: [
|
||||
{
|
||||
id: "Start",
|
||||
type: "rectangle",
|
||||
groupIds: [],
|
||||
x: 0,
|
||||
y: 0,
|
||||
width: 69.703125,
|
||||
height: 44,
|
||||
strokeWidth: 2,
|
||||
label: {
|
||||
groupIds: [],
|
||||
text: "Start",
|
||||
fontSize: 20,
|
||||
},
|
||||
link: null,
|
||||
},
|
||||
{
|
||||
id: "Stop",
|
||||
type: "rectangle",
|
||||
groupIds: [],
|
||||
x: 2.7109375,
|
||||
y: 94,
|
||||
width: 64.28125,
|
||||
height: 44,
|
||||
strokeWidth: 2,
|
||||
label: {
|
||||
groupIds: [],
|
||||
text: "Stop",
|
||||
fontSize: 20,
|
||||
},
|
||||
link: null,
|
||||
},
|
||||
{
|
||||
id: "Start_Stop",
|
||||
type: "arrow",
|
||||
groupIds: [],
|
||||
x: 34.852,
|
||||
y: 44,
|
||||
strokeWidth: 2,
|
||||
points: [
|
||||
[0, 0],
|
||||
[0, 50],
|
||||
],
|
||||
roundness: {
|
||||
type: 2,
|
||||
},
|
||||
start: {
|
||||
id: "Start",
|
||||
},
|
||||
end: {
|
||||
id: "Stop",
|
||||
},
|
||||
},
|
||||
],
|
||||
});
|
||||
} else {
|
||||
reject(new Error("ERROR"));
|
||||
}
|
||||
});
|
||||
},
|
||||
);
|
||||
|
||||
vi.spyOn(React, "useRef").mockReturnValue({
|
||||
current: {
|
||||
parseMermaidToExcalidraw: parseMermaidToExcalidrawSpy,
|
||||
},
|
||||
});
|
||||
|
||||
describe("Test <MermaidToExcalidraw/>", () => {
|
||||
beforeEach(async () => {
|
||||
await render(
|
||||
<Excalidraw
|
||||
initialData={{
|
||||
appState: {
|
||||
openDialog: "mermaid",
|
||||
},
|
||||
}}
|
||||
/>,
|
||||
);
|
||||
});
|
||||
|
||||
it("should open mermaid popup when active tool is mermaid", async () => {
|
||||
const dialog = document.querySelector(".dialog-mermaid")!;
|
||||
|
||||
expect(dialog.outerHTML).toMatchSnapshot();
|
||||
});
|
||||
|
||||
it("should close the popup and set the tool to selection when close button clicked", () => {
|
||||
const dialog = document.querySelector(".dialog-mermaid")!;
|
||||
const closeBtn = dialog.querySelector(".Dialog__close")!;
|
||||
fireEvent.click(closeBtn);
|
||||
expect(document.querySelector(".dialog-mermaid")).toBe(null);
|
||||
expect(window.h.state.activeTool).toStrictEqual({
|
||||
customType: null,
|
||||
lastActiveTool: null,
|
||||
locked: false,
|
||||
type: "selection",
|
||||
});
|
||||
});
|
||||
|
||||
it("should show error in preview when mermaid library throws error", async () => {
|
||||
const dialog = document.querySelector(".dialog-mermaid")!;
|
||||
const selector = ".dialog-mermaid-panels-text textarea";
|
||||
let editor = await getTextEditor(selector, false);
|
||||
|
||||
expect(dialog.querySelector('[data-testid="mermaid-error"]')).toBeNull();
|
||||
|
||||
expect(editor.textContent).toMatchInlineSnapshot(`
|
||||
"flowchart TD
|
||||
A[Christmas] -->|Get money| B(Go shopping)
|
||||
B --> C{Let me think}
|
||||
C -->|One| D[Laptop]
|
||||
C -->|Two| E[iPhone]
|
||||
C -->|Three| F[Car]"
|
||||
`);
|
||||
|
||||
await act(async () => {
|
||||
updateTextEditor(editor, "flowchart TD1");
|
||||
await new Promise((cb) => setTimeout(cb, 0));
|
||||
});
|
||||
editor = await getTextEditor(selector, false);
|
||||
|
||||
expect(editor.textContent).toBe("flowchart TD1");
|
||||
expect(dialog.querySelector('[data-testid="mermaid-error"]'))
|
||||
.toMatchInlineSnapshot(`
|
||||
<div
|
||||
class="mermaid-error"
|
||||
data-testid="mermaid-error"
|
||||
>
|
||||
Error!
|
||||
<p>
|
||||
ERROR
|
||||
</p>
|
||||
</div>
|
||||
`);
|
||||
});
|
||||
});
|
||||
@ -0,0 +1,10 @@
|
||||
// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
|
||||
|
||||
exports[`Test <MermaidToExcalidraw/> > should open mermaid popup when active tool is mermaid 1`] = `
|
||||
"<div class=\\"Modal Dialog dialog-mermaid\\" role=\\"dialog\\" aria-modal=\\"true\\" aria-labelledby=\\"dialog-title\\" data-prevent-outside-click=\\"true\\"><div class=\\"Modal__background\\"></div><div class=\\"Modal__content\\" style=\\"--max-width: 1200px;\\" tabindex=\\"0\\"><div class=\\"Island\\"><h2 id=\\"test-id-dialog-title\\" class=\\"Dialog__title\\"><span class=\\"Dialog__titleContent\\"><p class=\\"dialog-mermaid-title\\">Mermaid to Excalidraw</p><span class=\\"dialog-mermaid-desc\\">Currently only <a href=\\"https://mermaid.js.org/syntax/flowchart.html\\">Flowcharts</a> and <a href=\\"https://mermaid.js.org/syntax/sequenceDiagram.html\\">Sequence Diagrams</a> are supported. The other types will be rendered as image in Excalidraw.<br></span></span></h2><button class=\\"Dialog__close\\" title=\\"Close\\" aria-label=\\"Close\\"><svg aria-hidden=\\"true\\" focusable=\\"false\\" role=\\"img\\" viewBox=\\"0 0 20 20\\" class=\\"\\" fill=\\"none\\" stroke=\\"currentColor\\" stroke-linecap=\\"round\\" stroke-linejoin=\\"round\\"><g clip-path=\\"url(#a)\\" stroke=\\"currentColor\\" stroke-width=\\"1.25\\" stroke-linecap=\\"round\\" stroke-linejoin=\\"round\\"><path d=\\"M15 5 5 15M5 5l10 10\\"></path></g><defs><clipPath id=\\"a\\"><path fill=\\"#fff\\" d=\\"M0 0h20v20H0z\\"></path></clipPath></defs></svg></button><div class=\\"Dialog__content\\"><div class=\\"dialog-mermaid-body\\"><div class=\\"dialog-mermaid-panels\\"><div class=\\"dialog-mermaid-panels-text\\"><label>Mermaid Syntax</label><textarea>flowchart TD
|
||||
A[Christmas] -->|Get money| B(Go shopping)
|
||||
B --> C{Let me think}
|
||||
C -->|One| D[Laptop]
|
||||
C -->|Two| E[iPhone]
|
||||
C -->|Three| F[Car]</textarea></div><div class=\\"dialog-mermaid-panels-preview\\"><label>Preview</label><div class=\\"dialog-mermaid-panels-preview-wrapper\\"><div style=\\"opacity: 1;\\" class=\\"dialog-mermaid-panels-preview-canvas-container\\"></div></div></div></div><div class=\\"dialog-mermaid-buttons\\"><button type=\\"button\\" class=\\"excalidraw-button dialog-mermaid-insert\\">Insert<span><svg aria-hidden=\\"true\\" focusable=\\"false\\" role=\\"img\\" viewBox=\\"0 0 20 20\\" class=\\"\\" fill=\\"none\\" stroke=\\"currentColor\\" stroke-linecap=\\"round\\" stroke-linejoin=\\"round\\"><g stroke-width=\\"1.25\\"><path d=\\"M4.16602 10H15.8327\\"></path><path d=\\"M12.5 13.3333L15.8333 10\\"></path><path d=\\"M12.5 6.66666L15.8333 9.99999\\"></path></g></svg></span></button></div></div></div></div></div></div>"
|
||||
`;
|
||||
@ -1,13 +1,19 @@
|
||||
import { waitFor } from "@testing-library/dom";
|
||||
import { fireEvent } from "@testing-library/react";
|
||||
|
||||
export const getTextEditor = async (waitForEditor = true) => {
|
||||
const query = () =>
|
||||
document.querySelector(
|
||||
".excalidraw-textEditorContainer > textarea",
|
||||
) as HTMLTextAreaElement;
|
||||
export const getTextEditor = async (selector: string, waitForEditor = true) => {
|
||||
const query = () => document.querySelector(selector) as HTMLTextAreaElement;
|
||||
if (waitForEditor) {
|
||||
await waitFor(() => expect(query()).not.toBe(null));
|
||||
return query();
|
||||
}
|
||||
return query();
|
||||
};
|
||||
|
||||
export const updateTextEditor = (
|
||||
editor: HTMLTextAreaElement,
|
||||
value: string,
|
||||
) => {
|
||||
fireEvent.change(editor, { target: { value } });
|
||||
editor.dispatchEvent(new Event("input"));
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue