File size: 4,499 Bytes
3201ca6 | 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 | /**
* Utility functions for chat input component
*/
/* eslint-disable no-param-reassign */
const CLIPBOARD_IMAGE_EXTENSIONS: Record<string, string> = {
"image/png": "png",
"image/jpeg": "jpg",
"image/jpg": "jpg",
"image/gif": "gif",
"image/webp": "webp",
"image/bmp": "bmp",
};
/**
* Screenshots and copied images are often exposed only via
* `clipboardData.items` (not `clipboardData.files`). Normalize unnamed
* clipboard files so validation and loading UI have stable labels.
*/
export function normalizePastedFile(file: File): File {
if (file.name.trim()) {
return file;
}
const extension =
CLIPBOARD_IMAGE_EXTENSIONS[file.type] ??
(file.type.startsWith("image/") ? "png" : "bin");
return new File([file], `pasted-image-${Date.now()}.${extension}`, {
type: file.type,
lastModified: file.lastModified,
});
}
/** Matches names assigned by {@link normalizePastedFile} for clipboard screenshots. */
export const PASTED_CLIPBOARD_IMAGE_NAME = /^pasted-image-\d+\.[a-z0-9]+$/i;
export function isPastedClipboardImage(file: File): boolean {
return PASTED_CLIPBOARD_IMAGE_NAME.test(file.name);
}
export function partitionImagesForUpload(
images: File[],
markedUploadAsFileNames: readonly string[],
): { imagesToEmbed: File[]; imagesAsFiles: File[] } {
const marked = new Set(markedUploadAsFileNames);
const imagesToEmbed: File[] = [];
const imagesAsFiles: File[] = [];
for (const image of images) {
if (marked.has(image.name)) {
imagesAsFiles.push(image);
} else {
imagesToEmbed.push(image);
}
}
return { imagesToEmbed, imagesAsFiles };
}
/**
* Collect files from a paste event, including clipboard image items.
*/
export function getClipboardFiles(clipboardData: DataTransfer): File[] {
const fromFileList = Array.from(clipboardData.files);
if (fromFileList.length > 0) {
return fromFileList.map(normalizePastedFile);
}
const fromItems: File[] = [];
for (let i = 0; i < clipboardData.items.length; i += 1) {
const item = clipboardData.items[i];
if (item.kind !== "file") {
continue;
}
const file = item.getAsFile();
if (file) {
fromItems.push(normalizePastedFile(file));
}
}
return fromItems;
}
/**
* Check if contentEditable element is truly empty
*/
export const isContentEmpty = (element: HTMLDivElement | null): boolean => {
if (!element) {
return true;
}
const text = element.innerText || element.textContent || "";
return text.trim() === "";
};
/**
* Clear empty content from contentEditable element for placeholder display
*/
export const clearEmptyContent = (element: HTMLDivElement | null): void => {
if (element && isContentEmpty(element)) {
element.innerHTML = "";
element.textContent = "";
}
};
/**
* Get text content from contentEditable element
*/
export const getTextContent = (element: HTMLDivElement | null): string =>
element?.innerText || "";
/**
* Clear text content from contentEditable element
*/
export const clearTextContent = (element: HTMLDivElement | null): void => {
if (element) {
element.textContent = "";
}
};
/**
* Clear file input value
*/
export const clearFileInput = (element: HTMLInputElement | null): void => {
if (element) {
element.value = "";
}
};
/**
* Ensure cursor stays visible when content is scrollable
*/
export const ensureCursorVisible = (element: HTMLElement | null): void => {
if (!element) {
return;
}
const selection = window.getSelection();
if (!selection || selection.rangeCount === 0) {
return;
}
const range = selection.getRangeAt(0);
if (!range.getBoundingClientRect || !element.getBoundingClientRect) {
return;
}
const rect = range.getBoundingClientRect();
const inputRect = element.getBoundingClientRect();
// If cursor is below the visible area, scroll to show it
if (rect.bottom > inputRect.bottom) {
element.scrollTop = element.scrollHeight - element.clientHeight;
}
};
/**
* Focus a contentEditable input and place the caret at the end of its text.
*/
export const focusContentEditableAtEnd = (
element: HTMLElement | null,
): void => {
if (!element) {
return;
}
element.focus();
const selection = window.getSelection();
if (!selection) {
return;
}
const range = document.createRange();
range.selectNodeContents(element);
range.collapse(false);
selection.removeAllRanges();
selection.addRange(range);
ensureCursorVisible(element);
};
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