script/dom/execcommand/commands/
delete.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use crate::dom::bindings::str::DOMString;
6use crate::dom::execcommand::basecommand::BaseCommand;
7use crate::dom::selection::Selection;
8
9pub(crate) struct DeleteCommand {}
10
11impl BaseCommand for DeleteCommand {
12    /// <https://w3c.github.io/editing/docs/execCommand/#the-delete-command>
13    fn execute(&self, selection: &Selection, _value: DOMString) -> bool {
14        let active_range = selection
15            .active_range()
16            .expect("Must always have an active range");
17        // Step 1. If the active range is not collapsed, delete the selection and return true.
18        if !active_range.collapsed() {
19            self.delete_the_selection(selection, &active_range);
20            return true;
21        }
22        // Step 2. Canonicalize whitespace at the active range's start.
23        // TODO
24
25        // Step 3. Let node and offset be the active range's start node and offset.
26        // TODO
27
28        // Step 4. Repeat the following steps:
29        // TODO
30
31        // Step 5. If node is a Text node and offset is not zero, or if node is
32        // a block node that has a child with index offset − 1 and that child is a br or hr or img:
33        // TODO
34
35        // Step 6. If node is an inline node, return true.
36        // TODO
37
38        // Step 7. If node is an li or dt or dd and is the first child of its parent, and offset is zero:
39        // TODO
40
41        // Step 8. Let start node equal node and let start offset equal offset.
42        // TODO
43
44        // Step 9. Repeat the following steps:
45        // TODO
46
47        // Step 10. If offset is zero, and node has an editable inclusive ancestor in the same editing host that's an indentation element:
48        // TODO
49
50        // Step 11. If the child of start node with index start offset is a table, return true.
51        // TODO
52
53        // Step 12. If start node has a child with index start offset − 1, and that child is a table:
54        // TODO
55
56        // Step 13. If offset is zero; and either the child of start node with index start offset
57        // minus one is an hr, or the child is a br whose previousSibling is either a br or not an inline node:
58        // TODO
59
60        // Step 14. If the child of start node with index start offset is an li or dt or dd, and
61        // that child's firstChild is an inline node, and start offset is not zero:
62        // TODO
63
64        // Step 15. If start node's child with index start offset is an li or dt or dd, and
65        // that child's previousSibling is also an li or dt or dd:
66        // TODO
67
68        // Step 16. While start node has a child with index start offset minus one:
69        // TODO
70
71        // Step 17. Call collapse(start node, start offset) on the context object's selection.
72        // TODO
73
74        // Step 18. Call extend(node, offset) on the context object's selection.
75        // TODO
76
77        // Step 19. Delete the selection, with direction "backward".
78        // TODO
79
80        // Step 20. Return true.
81        true
82    }
83}
script/dom/execcommand/commands/delete.rs

script/dom/execcommand/commands/
delete.rs
