feat(render): implement clipboard extension
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espanso-render/src/extension/clipboard.rs
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espanso-render/src/extension/clipboard.rs
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/*
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* This file is part of espanso.
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*
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* Copyright (C) 2019-2021 Federico Terzi
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*
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* espanso is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* espanso is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with espanso. If not, see <https://www.gnu.org/licenses/>.
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*/
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use crate::{Extension, ExtensionOutput, ExtensionResult, Params};
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use thiserror::Error;
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pub trait ClipboardProvider {
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fn get_text(&self) -> Option<String>;
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}
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pub struct ClipboardExtension {
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provider: Box<dyn ClipboardProvider>,
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}
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#[allow(clippy::new_without_default)]
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impl ClipboardExtension {
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pub fn new(provider: Box<dyn ClipboardProvider>) -> Self {
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Self { provider }
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}
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}
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impl Extension for ClipboardExtension {
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fn name(&self) -> &str {
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"clipboard"
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}
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fn calculate(&self, _: &crate::Context, _: &crate::Scope, _: &Params) -> crate::ExtensionResult {
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if let Some(clipboard) = self.provider.get_text() {
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ExtensionResult::Success(ExtensionOutput::Single(clipboard))
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} else {
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ExtensionResult::Error(ClipboardExtensionError::MissingClipboard.into())
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}
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}
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}
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#[derive(Error, Debug)]
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pub enum ClipboardExtensionError {
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#[error("clipboard provider returned error")]
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MissingClipboard,
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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struct MockClipboardProvider {
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return_none: bool,
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}
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impl super::ClipboardProvider for MockClipboardProvider {
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fn get_text(&self) -> Option<String> {
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if self.return_none {
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None
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} else {
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Some("test".to_string())
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}
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}
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}
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#[test]
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fn clipboard_works_correctly() {
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let provider = MockClipboardProvider { return_none: false };
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let extension = ClipboardExtension::new(Box::new(provider));
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assert_eq!(
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extension
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.calculate(&Default::default(), &Default::default(), &Params::new())
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.into_success()
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.unwrap(),
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ExtensionOutput::Single("test".to_string())
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);
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}
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#[test]
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fn none_clipboard_produces_error() {
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let provider = MockClipboardProvider { return_none: true };
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let extension = ClipboardExtension::new(Box::new(provider));
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assert!(matches!(
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extension.calculate(&Default::default(), &Default::default(), &Params::new()),
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ExtensionResult::Error(_)
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));
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}
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}
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@ -19,3 +19,4 @@
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pub mod date;
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pub mod echo;
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pub mod clipboard;
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