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refactor!: refactor drag and drop events (#1187)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| --- | ||
| "wry": "patch" | ||
| --- | ||
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| **Breaking change**: Refactored the file-drop handling on the webview for better representation of the actual drag and drop operation: | ||
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| - Renamed `file-drop` cargo feature flag to `drag-drop`. | ||
| - Removed `FileDropEvent` enum and replaced with a new `DragDropEvent` enum. | ||
| - Renamed `WebViewAttributes::file_drop_handler` field to `WebViewAttributes::drag_drop_handler`. | ||
| - Renamed `WebViewAttributes::with_file_drop_handler` method to `WebViewAttributes::with_drag_drop_handler`. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,125 @@ | ||
| // Copyright 2020-2023 Tauri Programme within The Commons Conservancy | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // SPDX-License-Identifier: MIT | ||
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| use std::{ | ||
| cell::{Cell, UnsafeCell}, | ||
| path::PathBuf, | ||
| rc::Rc, | ||
| }; | ||
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| use gtk::{glib::GString, prelude::*}; | ||
| use webkit2gtk::WebView; | ||
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| use crate::DragDropEvent; | ||
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| struct DragDropController { | ||
| paths: UnsafeCell<Option<Vec<PathBuf>>>, | ||
| has_entered: Cell<bool>, | ||
| position: Cell<(i32, i32)>, | ||
| handler: Box<dyn Fn(DragDropEvent) -> bool>, | ||
| } | ||
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| impl DragDropController { | ||
| fn new(handler: Box<dyn Fn(DragDropEvent) -> bool>) -> Self { | ||
| Self { | ||
| handler, | ||
| paths: UnsafeCell::new(None), | ||
| has_entered: Cell::new(false), | ||
| position: Cell::new((0, 0)), | ||
| } | ||
| } | ||
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| fn store_paths(&self, paths: Vec<PathBuf>) { | ||
| unsafe { *self.paths.get() = Some(paths) }; | ||
| } | ||
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| fn take_paths(&self) -> Option<Vec<PathBuf>> { | ||
| unsafe { &mut *self.paths.get() }.take() | ||
| } | ||
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| fn store_position(&self, position: (i32, i32)) { | ||
| self.position.replace(position); | ||
| } | ||
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| fn enter(&self) { | ||
| self.has_entered.set(true); | ||
| } | ||
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| fn has_entered(&self) -> bool { | ||
| self.has_entered.get() | ||
| } | ||
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| fn leave(&self) { | ||
| self.has_entered.set(false); | ||
| } | ||
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| fn call(&self, event: DragDropEvent) -> bool { | ||
| (self.handler)(event) | ||
| } | ||
| } | ||
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| pub(crate) fn connect_drag_event(webview: &WebView, handler: Box<dyn Fn(DragDropEvent) -> bool>) { | ||
| let controller = Rc::new(DragDropController::new(handler)); | ||
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| { | ||
| let controller = controller.clone(); | ||
| webview.connect_drag_data_received(move |_, _, _, _, data, info, _| { | ||
| if info == 2 { | ||
| let uris = data.uris(); | ||
| let paths = uris.iter().map(path_buf_from_uri).collect::<Vec<_>>(); | ||
| controller.enter(); | ||
| controller.call(DragDropEvent::Enter { | ||
| paths: paths.clone(), | ||
| position: controller.position.get(), | ||
| }); | ||
| controller.store_paths(paths); | ||
| } | ||
| }); | ||
| } | ||
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| { | ||
| let controller = controller.clone(); | ||
| webview.connect_drag_motion(move |_, _, x, y, _| { | ||
| if controller.has_entered() { | ||
| controller.call(DragDropEvent::Over { position: (x, y) }); | ||
| } else { | ||
| controller.store_position((x, y)); | ||
| } | ||
| false | ||
| }); | ||
| } | ||
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| { | ||
| let controller = controller.clone(); | ||
| webview.connect_drag_drop(move |_, _, x, y, _| { | ||
| if controller.has_entered() { | ||
| if let Some(paths) = controller.take_paths() { | ||
| controller.leave(); | ||
| return controller.call(DragDropEvent::Drop { | ||
| paths, | ||
| position: (x, y), | ||
| }); | ||
| } | ||
| } | ||
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| false | ||
| }); | ||
| } | ||
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| webview.connect_drag_leave(move |_, _, time| { | ||
| if time == 0 { | ||
| controller.leave(); | ||
| controller.call(DragDropEvent::Leave); | ||
| } | ||
| }); | ||
| } | ||
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| fn path_buf_from_uri(gstr: &GString) -> PathBuf { | ||
| let path = gstr.as_str(); | ||
| let path = path.strip_prefix("file://").unwrap_or(path); | ||
| let path = percent_encoding::percent_decode(path.as_bytes()) | ||
| .decode_utf8_lossy() | ||
| .to_string(); | ||
| PathBuf::from(path) | ||
| } |
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