зеркало из https://github.com/mozilla/gecko-dev.git
95 строки
3.0 KiB
JavaScript
95 строки
3.0 KiB
JavaScript
/*
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* BrowserTouchHandler
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*
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* Receives touch events from our input event capturing in input.js
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* and relays appropriate events to content. Also handles requests
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* from content for UI.
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*/
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const BrowserTouchHandler = {
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_debugEvents: false,
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init: function init() {
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// Misc. events we catch during the bubbling phase
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document.addEventListener("PopupChanged", this, false);
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document.addEventListener("CancelTouchSequence", this, false);
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// Messages sent from content.js
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messageManager.addMessageListener("Content:ContextMenu", this);
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messageManager.addMessageListener("Content:SelectionCaret", this);
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},
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// Content forwarding the contextmenu command
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_onContentContextMenu: function _onContentContextMenu(aMessage) {
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// Note, target here is the target of the message manager message,
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// usually the browser.
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// Touch input selection handling
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if (!InputSourceHelper.isPrecise &&
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!SelectionHelperUI.isActive &&
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SelectionHelperUI.canHandleContextMenuMsg(aMessage)) {
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SelectionHelperUI.openEditSession(aMessage.target,
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aMessage.json.xPos,
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aMessage.json.yPos);
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return;
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}
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// Check to see if we have context menu item(s) that apply to what
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// was clicked on.
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let contextInfo = { name: aMessage.name,
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json: aMessage.json,
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target: aMessage.target };
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if (ContextMenuUI.showContextMenu(contextInfo)) {
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let event = document.createEvent("Events");
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event.initEvent("CancelTouchSequence", true, false);
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document.dispatchEvent(event);
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} else {
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// Send the MozEdgeUIGesture to input.js to
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// toggle the context ui.
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let event = document.createEvent("Events");
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event.initEvent("MozEdgeUICompleted", true, false);
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window.dispatchEvent(event);
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}
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},
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/*
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* Called when Content wants to initiate selection management
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* due to a tap in a form input.
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*/
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_onCaretSelectionStarted: function _onCaretSelectionStarted(aMessage) {
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SelectionHelperUI.attachToCaret(aMessage.target,
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aMessage.json.xPos,
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aMessage.json.yPos);
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},
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/*
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* Events
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*/
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handleEvent: function handleEvent(aEvent) {
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// ignore content events we generate
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if (this._debugEvents)
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Util.dumpLn("BrowserTouchHandler:", aEvent.type);
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switch (aEvent.type) {
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case "PopupChanged":
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case "CancelTouchSequence":
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if (!aEvent.detail)
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ContextMenuUI.reset();
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break;
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}
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},
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receiveMessage: function receiveMessage(aMessage) {
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if (this._debugEvents) Util.dumpLn("BrowserTouchHandler:", aMessage.name);
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switch (aMessage.name) {
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// Content forwarding the contextmenu command
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case "Content:ContextMenu":
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this._onContentContextMenu(aMessage);
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break;
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case "Content:SelectionCaret":
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this._onCaretSelectionStarted(aMessage);
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break;
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}
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},
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};
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