perspective-viewer 5.6.0

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// ┃ Copyright (c) 2017, the Perspective Authors.                              ┃
// ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
// ┃ This file is part of the Perspective library, distributed under the terms ┃
// ┃ of the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). ┃
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use web_sys::MouseEvent;
use yew::Callback;

/// Gate a `mousedown` callback to the primary button, so a right-click (which
/// opens the viewer context menu) never also triggers the control under it.
pub fn left_click(callback: Callback<MouseEvent>) -> Callback<MouseEvent> {
    Callback::from(move |event: MouseEvent| {
        if event.button() == 0 {
            callback.emit(event);
        }
    })
}