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| 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 | + |
| 5 | +use std::ops::Deref; |
| 6 | +use std::rc::Rc; |
| 7 | +use std::str::FromStr; |
| 8 | + |
| 9 | +use data_url::mime::Mime; |
| 10 | +use dom_struct::dom_struct; |
| 11 | +use js::rust::{HandleObject, MutableHandleValue}; |
| 12 | +use script_bindings::record::Record; |
| 13 | + |
| 14 | +use crate::dom::bindings::cell::DomRefCell; |
| 15 | +use crate::dom::bindings::codegen::Bindings::ClipboardBinding::{ |
| 16 | + ClipboardItemMethods, ClipboardItemOptions, PresentationStyle, |
| 17 | +}; |
| 18 | +use crate::dom::bindings::error::{Error, Fallible}; |
| 19 | +use crate::dom::bindings::frozenarray::CachedFrozenArray; |
| 20 | +use crate::dom::bindings::reflector::{Reflector, reflect_dom_object_with_proto}; |
| 21 | +use crate::dom::bindings::root::DomRoot; |
| 22 | +use crate::dom::bindings::str::DOMString; |
| 23 | +use crate::dom::promise::Promise; |
| 24 | +use crate::dom::window::Window; |
| 25 | +use crate::script_runtime::{CanGc, JSContext}; |
| 26 | + |
| 27 | +/// <https://w3c.github.io/clipboard-apis/#web-custom-format> |
| 28 | +const CUSTOM_FORMAT_PREFIX: &str = "web "; |
| 29 | + |
| 30 | +/// <https://w3c.github.io/clipboard-apis/#representation> |
| 31 | +#[derive(JSTraceable, MallocSizeOf)] |
| 32 | +struct Representation { |
| 33 | + #[no_trace] |
| 34 | + #[ignore_malloc_size_of = "Extern type"] |
| 35 | + mime_type: Mime, |
| 36 | + is_custom: bool, |
| 37 | + #[ignore_malloc_size_of = "Rc is hard"] |
| 38 | + data: Rc<Promise>, |
| 39 | +} |
| 40 | + |
| 41 | +#[dom_struct] |
| 42 | +pub(crate) struct ClipboardItem { |
| 43 | + reflector_: Reflector, |
| 44 | + representations: DomRefCell<Vec<Representation>>, |
| 45 | + presentation_style: DomRefCell<PresentationStyle>, |
| 46 | + #[ignore_malloc_size_of = "mozjs"] |
| 47 | + frozen_types: CachedFrozenArray, |
| 48 | +} |
| 49 | + |
| 50 | +impl ClipboardItem { |
| 51 | + fn new_inherited() -> ClipboardItem { |
| 52 | + ClipboardItem { |
| 53 | + reflector_: Reflector::new(), |
| 54 | + representations: Default::default(), |
| 55 | + presentation_style: Default::default(), |
| 56 | + frozen_types: CachedFrozenArray::new(), |
| 57 | + } |
| 58 | + } |
| 59 | + |
| 60 | + fn new(window: &Window, proto: Option<HandleObject>, can_gc: CanGc) -> DomRoot<ClipboardItem> { |
| 61 | + reflect_dom_object_with_proto( |
| 62 | + Box::new(ClipboardItem::new_inherited()), |
| 63 | + window, |
| 64 | + proto, |
| 65 | + can_gc, |
| 66 | + ) |
| 67 | + } |
| 68 | +} |
| 69 | + |
| 70 | +impl ClipboardItemMethods<crate::DomTypeHolder> for ClipboardItem { |
| 71 | + /// <https://w3c.github.io/clipboard-apis/#dom-clipboarditem-clipboarditem> |
| 72 | + fn Constructor( |
| 73 | + global: &Window, |
| 74 | + proto: Option<HandleObject>, |
| 75 | + can_gc: CanGc, |
| 76 | + items: Record<DOMString, Rc<Promise>>, |
| 77 | + options: &ClipboardItemOptions, |
| 78 | + ) -> Fallible<DomRoot<ClipboardItem>> { |
| 79 | + // Step 1 If items is empty, then throw a TypeError. |
| 80 | + if items.is_empty() { |
| 81 | + return Err(Error::Type(String::from("No item provided"))); |
| 82 | + } |
| 83 | + |
| 84 | + // Step 2 If options is empty, then set options["presentationStyle"] = "unspecified". |
| 85 | + // NOTE: This is done inside bindings |
| 86 | + |
| 87 | + // Step 3 Set this's clipboard item to a new clipboard item. |
| 88 | + let clipboard_item = ClipboardItem::new(global, proto, can_gc); |
| 89 | + |
| 90 | + // Step 4 Set this's clipboard item's presentation style to options["presentationStyle"]. |
| 91 | + *clipboard_item.presentation_style.borrow_mut() = options.presentationStyle; |
| 92 | + |
| 93 | + // Step 6 For each (key, value) in items: |
| 94 | + for (key, value) in items.deref() { |
| 95 | + // Step 6.2 Let isCustom be false. |
| 96 | + |
| 97 | + // Step 6.3 If key starts with `"web "` prefix, then |
| 98 | + // Step 6.3.1 Remove `"web "` prefix and assign the remaining string to key. |
| 99 | + let (key, is_custom) = match key.strip_prefix(CUSTOM_FORMAT_PREFIX) { |
| 100 | + None => (key.str(), false), |
| 101 | + // Step 6.3.2 Set isCustom true |
| 102 | + Some(stripped) => (stripped, true), |
| 103 | + }; |
| 104 | + |
| 105 | + // Step 6.5 Let mimeType be the result of parsing a MIME type given key. |
| 106 | + // Step 6.6 If mimeType is failure, then throw a TypeError. |
| 107 | + let mime_type = |
| 108 | + Mime::from_str(key).map_err(|_| Error::Type(String::from("Invalid mime type")))?; |
| 109 | + |
| 110 | + // Step 6.7 If this's clipboard item's list of representations contains a representation |
| 111 | + // whose MIME type is mimeType and whose [representation/isCustom] is isCustom, then throw a TypeError. |
| 112 | + if clipboard_item |
| 113 | + .representations |
| 114 | + .borrow() |
| 115 | + .iter() |
| 116 | + .any(|representation| { |
| 117 | + representation.mime_type == mime_type && representation.is_custom == is_custom |
| 118 | + }) |
| 119 | + { |
| 120 | + return Err(Error::Type(String::from("Tried to add a duplicate mime"))); |
| 121 | + } |
| 122 | + |
| 123 | + // Step 6.1 Let representation be a new representation. |
| 124 | + // Step 6.4 Set representation’s isCustom flag to isCustom. |
| 125 | + // Step 6.8 Set representation’s MIME type to mimeType. |
| 126 | + // Step 6.9 Set representation’s data to value. |
| 127 | + let representation = Representation { |
| 128 | + mime_type, |
| 129 | + is_custom, |
| 130 | + data: value.clone(), |
| 131 | + }; |
| 132 | + |
| 133 | + // Step 6.10 Append representation to this's clipboard item's list of representations. |
| 134 | + clipboard_item |
| 135 | + .representations |
| 136 | + .borrow_mut() |
| 137 | + .push(representation); |
| 138 | + } |
| 139 | + |
| 140 | + // NOTE: The steps for creating a frozen array from the list of mimeType are done in the Types() method |
| 141 | + |
| 142 | + Ok(clipboard_item) |
| 143 | + } |
| 144 | + |
| 145 | + /// <https://w3c.github.io/clipboard-apis/#dom-clipboarditem-presentationstyle> |
| 146 | + fn PresentationStyle(&self) -> PresentationStyle { |
| 147 | + *self.presentation_style.borrow() |
| 148 | + } |
| 149 | + |
| 150 | + /// <https://w3c.github.io/clipboard-apis/#dom-clipboarditem-types> |
| 151 | + fn Types(&self, cx: JSContext, can_gc: CanGc, retval: MutableHandleValue) { |
| 152 | + self.frozen_types.get_or_init( |
| 153 | + || { |
| 154 | + // Step 5 Let types be a list of DOMString. |
| 155 | + let mut types = Vec::new(); |
| 156 | + |
| 157 | + self.representations |
| 158 | + .borrow() |
| 159 | + .iter() |
| 160 | + .for_each(|representation| { |
| 161 | + // Step 6.11 Let mimeTypeString be the result of serializing a MIME type with mimeType. |
| 162 | + let mime_type_string = representation.mime_type.to_string(); |
| 163 | + |
| 164 | + // Step 6.12 If isCustom is true, prefix mimeTypeString with `"web "`. |
| 165 | + let mime_type_string = if representation.is_custom { |
| 166 | + format!("{}{}", CUSTOM_FORMAT_PREFIX, mime_type_string) |
| 167 | + } else { |
| 168 | + mime_type_string |
| 169 | + }; |
| 170 | + |
| 171 | + // Step 6.13 Add mimeTypeString to types. |
| 172 | + types.push(DOMString::from(mime_type_string)); |
| 173 | + }); |
| 174 | + types |
| 175 | + }, |
| 176 | + cx, |
| 177 | + retval, |
| 178 | + can_gc, |
| 179 | + ); |
| 180 | + } |
| 181 | +} |
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