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Make "pageStyle" prop may also be a function #198

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Make "pageStyle" prop may also be a function #198

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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -144,7 +144,7 @@ The component accepts the following props (note: `?` denotes an optional prop):
| **`onAfterPrint`** | `function?` | Callback function that triggers after print |
| **`onPrintError`** | `function(errorLocation: string, error: Error)?` | Callback function that will be called if there is a printing error serious enough that printing cannot continue. Currently limited to Promise rejections in `onBeforeGetContent` or `onBeforePrint`. Use this to attempt to print again. `errorLocation` will tell you in which callback the Promise was rejected. |
| **`removeAfterPrint`** | `boolean?` | Remove the print iframe after action. Defaults to `false`. |
| **`pageStyle`** | `string?` | Override default print window styling |
| **`pageStyle`** | `string?`, `function?` | Override default print window styling. If `function` then calling in runtime just before the print. |
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Should be string?|function?

| **`bodyClass`** | `string?` | Class to pass to the print window body |

## FAQ
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6 changes: 4 additions & 2 deletions src/index.tsx
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Expand Up @@ -22,7 +22,7 @@ export interface IReactToPrintProps {
/** Callback function to listen for printing errors */
onPrintError?: (errorLocation: string, error: Error) => void;
/** Override default print window styling */
pageStyle?: string;
pageStyle?: string | (() => string);
/** Optional class to pass to the print window body */
bodyClass?: string;
/** Optional - remove the iframe after printing. */
Expand Down Expand Up @@ -162,7 +162,9 @@ export default class ReactToPrint extends React.Component<IReactToPrintProps> {
/* remove date/time from top */
const defaultPageStyle = pageStyle === undefined
? "@page { size: auto; margin: 0mm; } @media print { body { -webkit-print-color-adjust: exact; } }" // tslint:disable-line max-line-length
: pageStyle;
: typeof pageStyle === "function"
? pageStyle()
: pageStyle;

const styleEl = domDoc.createElement("style");
styleEl.appendChild(domDoc.createTextNode(defaultPageStyle));
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