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Highlight selected text in input fields

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Fixes #9993.  This does not yet allow stylesheets to set the selection colors;
instead it uses a hard-coded orange background and white foreground.
This commit is contained in:
Matt Brubeck 2016-03-18 16:38:17 -07:00
parent f2f05869d6
commit 6171000875
17 changed files with 229 additions and 62 deletions
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18
components/layout/wrapper.rs
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@ -37,6 +37,7 @@ use gfx::text::glyph::CharIndex;
use incremental::RestyleDamage;
use msg::constellation_msg::PipelineId;
use opaque_node::OpaqueNodeMethods;
use range::{Range, RangeIndex};
use script::dom::attr::AttrValue;
use script::dom::bindings::inheritance::{Castable, CharacterDataTypeId, ElementTypeId};
use script::dom::bindings::inheritance::{HTMLElementTypeId, NodeTypeId};
@ -825,7 +826,7 @@ pub trait ThreadSafeLayoutNode : Clone + Copy + Sized + PartialEq {
fn text_content(&self) -> TextContent;
/// If the insertion point is within this node, returns it. Otherwise, returns `None`.
fn insertion_point(&self) -> Option<CharIndex>;
fn selection(&self) -> Option<Range<CharIndex>>;
/// If this is an image element, returns its URL. If this is not an image element, fails.
///
@ -1049,21 +1050,24 @@ impl<'ln> ThreadSafeLayoutNode for ServoThreadSafeLayoutNode<'ln> {
panic!("not text!")
}
fn insertion_point(&self) -> Option<CharIndex> {
fn selection(&self) -> Option<Range<CharIndex>> {
let this = unsafe {
self.get_jsmanaged()
};
if let Some(area) = this.downcast::<HTMLTextAreaElement>() {
if let Some(insertion_point) = unsafe { area.get_absolute_insertion_point_for_layout() } {
if let Some(selection) = unsafe { area.get_absolute_selection_for_layout() } {
let text = unsafe { area.get_value_for_layout() };
return Some(CharIndex(search_index(insertion_point, text.char_indices())));
let begin_byte = selection.begin();
let begin = search_index(begin_byte, text.char_indices());
let length = search_index(selection.length(), text[begin_byte..].char_indices());
return Some(Range::new(CharIndex(begin), CharIndex(length)));
}
}
if let Some(input) = this.downcast::<HTMLInputElement>() {
let insertion_point_index = unsafe { input.get_insertion_point_index_for_layout() };
if let Some(insertion_point_index) = insertion_point_index {
return Some(CharIndex(insertion_point_index));
if let Some(selection) = unsafe { input.get_selection_for_layout() } {
return Some(Range::new(CharIndex(selection.begin()),
CharIndex(selection.length())));
}
}
None