Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 insertions, 0 deletions

diff --git a/dom/interfaces/base/nsITextInputProcessorCallback.idl b/dom/interfaces/base/nsITextInputProcessorCallback.idl
new file mode 100644
index 0000000000..8cee842108
--- /dev/null
+++ b/dom/interfaces/base/nsITextInputProcessorCallback.idl
@@ -0,0 +1,250 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+interface nsITextInputProcessor;
+
+/**
+ * nsITextInputProcessorNotification stores the type of notification to IME and
+ * its detail.  See each explanation of attribute for the detail.
+ */
+
+[scriptable, builtinclass, uuid(c0ce1add-82bb-45ab-b99a-42cfba7fd5d7)]
+interface nsITextInputProcessorNotification : nsISupports
+{
+  /**
+   * type attribute represents what's notified or requested.  Value must be
+   * one of following values:
+   *
+   * "request-to-commit"  (required to be handled)
+   *   This is requested when Gecko believes that active composition should be
+   *   committed.  nsITextInputProcessorCallback::onNotify() has to handle this
+   *   notification.
+   *
+   * "request-to-cancel" (required to be handled)
+   *   This is requested when Gecko believes that active composition should be
+   *   canceled.  I.e., composition should be committed with empty string.
+   *   nsITextInputProcessorCallback::onNotify() has to handle this
+   *   notification.
+   *
+   * "notify-end-input-transaction" (optional)
+   *   This is notified when the callback is detached from
+   *   nsITextInputProcessor.  I.e., the TextInputProcessor lost the rights
+   *   to input text and needs to call .beginInputTransaction() before next
+   *   input.
+   *
+   * "notify-focus" (optional)
+   *   This is notified when an editable editor gets focus and Gecko starts
+   *   to observe changes in the content. E.g., selection changes.
+   *   IME shouldn't change DOM tree, focus nor something when this is notified.
+   *
+   * "notify-blur" (optional)
+   *   This is notified when an editable editor loses focus and Gecko stops
+   *   observing the changes in the content.
+   *
+   * "notify-text-change" (optional)
+   *   This is notified when text in the focused editor is modified.
+   *   Some attributes below are available to retrieve the detail.
+   *   IME shouldn't change DOM tree, focus nor something when this is notified.
+   *   Note that when there is no chance to notify you of some text changes
+   *   safely, this represents all changes as a change.
+   *
+   * "notify-selection-change" (optional)
+   *   This is notified when selection in the focused editor is changed.
+   *   Some attributes below are available to retrieve the detail.
+   *   IME shouldn't change DOM tree, focus nor something when this is notified.
+   *   Note that when there was no chance to notify you of this safely, this
+   *   represents the latest selection change.
+   *
+   * "notify-position-change" (optional)
+   *   This is notified when layout is changed in the editor or the window
+   *   is moved.
+   *   IME shouldn't change DOM tree, focus nor something when this is notified.
+   *   Note that when there was no chance to notify you of this safely, this
+   *   represents the latest layout change.
+   */
+  readonly attribute ACString type;
+
+  /**
+   * This attribute has a vaild value when type is "notify-selection-change".
+   * This is true if selection has a range.  Otherwise, i.e., there is no
+   * range such as after calling Selection.removeAllRanges, this is false.
+   */
+  readonly attribute bool hasRange;
+
+  /**
+   * Be careful, line breakers in the editor are treated as native line
+   * breakers.  I.e., on Windows, a line breaker is "\r\n" (CRLF).  On the
+   * others, it is "\n" (LF).  If you want TextInputProcessor to treat line
+   * breakers on Windows as XP line breakers (LF), please file a bug with
+   * the reason why you need the behavior.
+   */
+
+  /**
+   * This attribute has a valid value when type is "notify-text-change", or
+   * is "notify-selection-change" and hasRange is true.
+   * This is offset of the start of modified text range if type is
+   * "notify-text-change".  Or offset of start of selection if type is
+   * "notify-selection-change".
+   */
+  readonly attribute unsigned long offset;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change"
+   * and hasRange is true.
+   * This is selected text.  I.e., the length is selected length and
+   * it's empty if the selection is collapsed.
+   */
+  readonly attribute AString text;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change".
+   * This is set to true when the selection is collapsed or no range.
+   * Otherwise, false.
+   */
+  readonly attribute boolean collapsed;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change"
+   * and hasRange is true.
+   * This is selected length.  I.e., if this is 0, collapsed is set to true.
+   */
+  readonly attribute uint32_t length;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change"
+   * and hasRange is true.
+   * When selection is created from latter point to former point, this is
+   * set to true.  Otherwise, false.
+   * I.e., if this is true, offset + length is the anchor of selection.
+   */
+  readonly attribute boolean reversed;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change".
+   * This indicates the start of the selection's writing mode.
+   * The value can be "horizontal-tb", "vertical-rl" or "vertical-lr".
+   */
+  readonly attribute ACString writingMode;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change".
+   * If the selection change was caused by composition, this is set to true.
+   * Otherwise, false.
+   */
+  readonly attribute boolean causedByComposition;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change".
+   * If the selection change was caused by selection event, this is set to true.
+   * Otherwise, false.
+   */
+  readonly attribute boolean causedBySelectionEvent;
+
+  /**
+   * This attribute has a valid value when type is "notify-selection-change".
+   * If the selection change occurred during composition, this is set to true.
+   * Otherwise, false.
+   */
+  readonly attribute boolean occurredDuringComposition;
+
+  /**
+   * This attribute has a valid value when type is "notify-text-change".
+   * This is removed text length by the change(s).  If this is empty, new text
+   * was just inserted.  Otherwise, the text is replaced with new text.
+   */
+  readonly attribute unsigned long removedLength;
+
+  /**
+   * This attribute has a valid value when type is "notify-text-change".
+   * This is added text length by the change(s).  If this is empty, old text
+   * was just deleted.  Otherwise, the text replaces the old text.
+   */
+  readonly attribute unsigned long addedLength;
+
+  /**
+   * This attribute has a valid value when type is "notify-text-change".
+   * If the text change(s) was caused only by composition, this is set to true.
+   * Otherwise, false.  I.e., if one of text changes are caused by JS or
+   * modifying without composition, this is set to false.
+   */
+  readonly attribute boolean causedOnlyByComposition;
+
+  /**
+   * This attribute has a valid value when type is "notify-text-change".
+   * If at least one text change not caused by composition occurred during
+   * composition, this is set to true.  Otherwise, false.
+   * Note that this is set to false when new change is caused by neither
+   * composition nor occurred during composition because it's outdated for
+   * new composition.
+   * In other words, when text changes not caused by composition occurred
+   * during composition and it may cause committing composition, this is
+   * set to true.
+   */
+  readonly attribute boolean includingChangesDuringComposition;
+
+  /**
+   * This attribute has a valid value when type is "notify-text-change".
+   * If at least one text change occurred when there was no composition, this
+   * is set to true.  Otherwise, false.
+   */
+  readonly attribute boolean includingChangesWithoutComposition;
+};
+
+/**
+ * nsITextInputProcessorCallback is a callback interface for JS to implement
+ * IME.  IME implemented by JS can implement onNotify() function and must send
+ * it to nsITextInputProcessor at initializing.  Then, onNotify() will be
+ * called with nsITextInputProcessorNotification instance.
+ * The reason why onNotify() uses string simply is that if we will support
+ * other notifications such as text changes and selection changes, we need to
+ * notify IME of some other information.  Then, only changing
+ * nsITextInputProcessorNotification interface is better for compatibility.
+ */
+
+[scriptable, function, uuid(23d5f242-adb5-46f1-8766-90d1bf0383df)]
+interface nsITextInputProcessorCallback : nsISupports
+{
+  /**
+   * When Gecko notifies IME of something or requests something to IME,
+   * this is called.
+   *
+   * @param aTextInputProcessor Reference to the nsITextInputProcessor service
+   *                            which is the original receiver of the request
+   *                            or notification.
+   * @param aNotification       Stores type of notifications and additional
+   *                            information.
+   * @return                    Return true if it succeeded or does nothing.
+   *                            Otherwise, return false.
+   *
+   * Example #1 The simplest implementation of nsITextInputProcessorCallback is:
+   *
+   *   function simpleCallback(aTIP, aNotification)
+   *   {
+   *     try {
+   *       switch (aNotification.type) {
+   *         case "request-to-commit":
+   *           aTIP.commitComposition();
+   *           break;
+   *         case "request-to-cancel":
+   *           aTIP.cancelComposition();
+   *           break;
+   *       }
+   *     } catch (e) {
+   *       return false;
+   *     }
+   *     return true;
+   *   }
+   *
+   *   var TIP = Components.classes["@mozilla.org/text-input-processor;1"].
+   *               createInstance(Components.interfaces.nsITextInputProcessor);
+   *   if (!TIP.init(window, simpleCallback)) {
+   *     return;
+   *   }
+   */
+  boolean onNotify(in nsITextInputProcessor aTextInputProcessor,
+                   in nsITextInputProcessorNotification aNotification);
+};