CB-8481 Backbutton support for Windows 10 Mobile.
Project: http://git-wip-us.apache.org/repos/asf/cordova-windows/repo Commit: http://git-wip-us.apache.org/repos/asf/cordova-windows/commit/02a1ded1 Tree: http://git-wip-us.apache.org/repos/asf/cordova-windows/tree/02a1ded1 Diff: http://git-wip-us.apache.org/repos/asf/cordova-windows/diff/02a1ded1 Branch: refs/heads/master Commit: 02a1ded1edb70d38f9259f8ab4543887514a19f8 Parents: 8a51ba9 Author: sgrebnov <v-seg...@microsoft.com> Authored: Fri Nov 6 15:40:09 2015 +0300 Committer: sgrebnov <v-seg...@microsoft.com> Committed: Fri Nov 6 16:59:35 2015 +0300 ---------------------------------------------------------------------- cordova-js-src/platform.js | 94 +++++++++++++++++++++++------------------ 1 file changed, 52 insertions(+), 42 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/cordova-windows/blob/02a1ded1/cordova-js-src/platform.js ---------------------------------------------------------------------- diff --git a/cordova-js-src/platform.js b/cordova-js-src/platform.js index 62e011c..002017f 100644 --- a/cordova-js-src/platform.js +++ b/cordova-js-src/platform.js @@ -38,24 +38,6 @@ module.exports = { channel.onActivated = cordova.addDocumentEventHandler('activated'); } channel.onNativeReady.fire(); - - // Only load this code if we're running on Win10 in a non-emulated app frame, otherwise crash \o/ - if (parseInt(window.clientInformation.userAgent.match(/Windows NT ([0-9.]+)/)[1]) >= 10) { - var sysnavman = Windows.UI.Core.SystemNavigationManager.getForCurrentView(); - // Inject a listener for the backbutton on the document. - var backButtonChannel = cordova.addDocumentEventHandler('backbutton'); - backButtonChannel.onHasSubscribersChange = function() { - // If we just attached the first handler or detached the last handler, - // let native know we need to override the back button. - sysnavman.appViewBackButtonVisibility = (this.numHandlers == 1); - }; - - var backRequestedHandler = function backRequestedHandler() { - cordova.fireDocumentEvent('backbutton',null,true); - return true; - }; - sysnavman.addEventListener("backrequested", backRequestedHandler, false); - } var onWinJSReady = function () { var app = WinJS.Application; @@ -77,33 +59,12 @@ module.exports = { cordova.fireDocumentEvent('activated', platform.activationContext, true); }; - // preserve reference to original backclick implementation - var defaultBackButtonHandler = app.onbackclick; - // create document event handler for backbutton - var backButtonChannel = cordova.addDocumentEventHandler('backbutton'); - - // inject new back button handler - app.onbackclick = function (e) { - // check if listeners are registered, if yes use custom backbutton event - // NOTE: backbutton handlers have to throw an exception in order to exit the app - if (backButtonChannel.numHandlers >= 1) { - try { - cordova.fireDocumentEvent('backbutton', e, true); - return true; - } - catch (e) { - return false; - } - } - // if not listeners are active, use default implementation (backwards compatibility) - else { - return defaultBackButtonHandler.apply(app, arguments); - } - }; - app.addEventListener("checkpoint", checkpointHandler); app.addEventListener("activated", activationHandler, false); Windows.UI.WebUI.WebUIApplication.addEventListener("resuming", resumingHandler, false); + + injectBackButtonHandler(); + app.start(); }; @@ -131,3 +92,52 @@ module.exports = { } } }; + +function injectBackButtonHandler() { + + var app = WinJS.Application; + + // create document event handler for backbutton + var backButtonChannel = cordova.addDocumentEventHandler('backbutton'); + + // preserve reference to original backclick implementation + // `false` as a result will trigger system default behaviour + var defaultBackButtonHandler = app.onbackclick || function () { return false; }; + + var backRequestedHandler = function backRequestedHandler(evt) { + // check if listeners are registered, if yes use custom backbutton event + // NOTE: On Windows Phone 8.1 backbutton handlers have to throw an exception in order to exit the app + if (backButtonChannel.numHandlers >= 1) { + try { + cordova.fireDocumentEvent('backbutton', evt, true); + evt.handled = true; // Windows Mobile requires handled to be set as well; + return true; + } + catch (e) { + return false; + } + } + // if not listeners are active, use default implementation (backwards compatibility) + else { + return defaultBackButtonHandler.apply(app, arguments); + } + }; + + // Only load this code if we're running on Win10 in a non-emulated app frame, otherwise crash \o/ + if (navigator.appVersion.indexOf('MSAppHost/3.0') !== -1) { // Windows 10 UWP (PC/Tablet/Phone) + var navigationManager = Windows.UI.Core.SystemNavigationManager.getForCurrentView(); + // Inject a listener for the backbutton on the document. + backButtonChannel.onHasSubscribersChange = function () { + // If we just attached the first handler or detached the last handler, + // let native know we need to override the back button. + navigationManager.appViewBackButtonVisibility = (this.numHandlers > 0) ? + Windows.UI.Core.AppViewBackButtonVisibility.visible : + Windows.UI.Core.AppViewBackButtonVisibility.collapsed; + }; + + navigationManager.addEventListener("backrequested", backRequestedHandler, false); + } else { // Windows 8.1 Phone + // inject new back button handler + app.onbackclick = backRequestedHandler; + } +} --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cordova.apache.org For additional commands, e-mail: commits-h...@cordova.apache.org
