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libservo: Add a ClipboardDelegate and a default implementation (#35297)

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Add a `ClipboardDelegate` to the `WebView` API and a default
implementation in libservo for this delegate that works on Mac, Windows,
and Linux. Support for Android will be added in the future. This means
that embedders do not need to do anything special to get clipboard
support, but can choose to override it or implement it for other
platforms.

In addition, this adds support for handling fetches of clipboard contents
and renames things to reflect that eventually other types of clipboard
content will be supported. Part of this is removing the string
argument from the `ClipboardEventType::Paste` enum because script will
need to get other types of content from the clipboard than just a
string. It now talks to the embedder to get this information directly.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-02-07 11:43:46 +01:00 • committed by GitHub
parent b5b69988cc
commit 19e41ab9f9
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20 changed files with 212 additions and 127 deletions
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20
components/script/dom/document.rs
View file

@ -1576,7 +1576,17 @@ impl Document {
// Step 7.2.1
drag_data_store.set_mode(Mode::ReadWrite);
},
ClipboardEventType::Paste(ref contents) => {
ClipboardEventType::Paste => {
let (sender, receiver) = ipc::channel().unwrap();
self.window
.send_to_constellation(ScriptMsg::ForwardToEmbedder(
EmbedderMsg::GetClipboardText(self.window.webview_id(), sender),
));
let text_contents = receiver
.recv()
.map(Result::unwrap_or_default)
.unwrap_or_default();
// Step 7.1.1
drag_data_store.set_mode(Mode::ReadOnly);
// Step 7.1.2 If trusted or the implementation gives script-generated events access to the clipboard
@ -1585,7 +1595,7 @@ impl Document {
// Step 7.1.2.1.1 If clipboard-part contains plain text, then
let plain_string = PlainString::new(
DOMString::from_string(contents.to_string()),
DOMString::from_string(text_contents.to_string()),
DOMString::from("text/plain"),
);
let _ = drag_data_store.add(Kind::Text(plain_string));
@ -1636,7 +1646,7 @@ impl Document {
// Step 1
if drag_data_store.list_len() > 0 {
// Step 1.1 Clear the clipboard.
self.send_to_embedder(EmbedderMsg::ClearClipboardContents(self.webview_id()));
self.send_to_embedder(EmbedderMsg::ClearClipboard(self.webview_id()));
// Step 1.2
for item in drag_data_store.iter_item_list() {
match item {
@ -1644,7 +1654,7 @@ impl Document {
// Step 1.2.1.1 Ensure encoding is correct per OS and locale conventions
// Step 1.2.1.2 Normalize line endings according to platform conventions
// Step 1.2.1.3
self.send_to_embedder(EmbedderMsg::SetClipboardContents(
self.send_to_embedder(EmbedderMsg::SetClipboardText(
self.webview_id(),
string.data(),
));
@ -1660,7 +1670,7 @@ impl Document {
// Step 2.1
if drag_data_store.clear_was_called {
// Step 2.1.1 If types-to-clear list is empty, clear the clipboard
self.send_to_embedder(EmbedderMsg::ClearClipboardContents(self.webview_id()));
self.send_to_embedder(EmbedderMsg::ClearClipboard(self.webview_id()));
// Step 2.1.2 Else remove the types in the list from the clipboard
// As of now this can't be done with Arboard, and it's possible that will be removed from the spec
}