雲端硬碟操作
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
Action
物件可讓您在 Google Workspace 外掛程式中建構互動式行為。這些函式會定義使用者與外掛程式 UI 中的小工具 (例如按鈕) 互動時,會發生什麼情況。
動作會使用小工具處理常式函式附加至指定小工具,這個函式也會定義觸發動作的條件。觸發時,動作會執行指定的回呼函式。回呼函式會收到 event 物件,其中包含使用者在用戶端互動的相關資訊。您必須實作回呼函式,並讓該函式傳回特定回應物件。
舉例來說,假設您想要在點選按鈕時建構並顯示新卡片,為此,您必須建立新的按鈕小工具,並使用按鈕小工具處理常式函式 setOnClickAction(action)
設定建構資訊卡 Action
。您定義的 Action
會指定在點選按鈕時執行的 Apps Script 回呼函式。在這種情況下,您會實作回呼函式來建構所需資訊卡,並傳回 ActionResponse
物件。回應物件會指示外掛程式顯示回呼函式建構的資訊卡。
本頁面說明可加入外掛程式的 Google 雲端硬碟專屬小工具動作。
促成互動
擴充雲端硬碟的 Google Workspace 外掛程式可以包含額外的雲端硬碟專屬小工具動作。如要執行這項動作,相關聯的動作回呼函式必須傳回專用回應物件:
如要使用這些小工具動作和回應物件,必須符合下列所有條件:
- 使用者選取一或多個雲端硬碟項目時,系統會觸發這項動作。
- 外掛程式的資訊清單中包含
https://www.googleapis.com/auth/drive.file
Drive 範圍。
要求所選檔案的存取權
以下範例說明如何為 Google 雲端硬碟建構關聯介面,在使用者選取一或多個雲端硬碟項目時觸發。這個範例會測試每個項目,確認外掛程式是否已取得存取權限;如果沒有,則會使用 DriveItemsSelectedActionResponse
物件向使用者要求該權限。授予項目權限後,外掛程式會顯示該項目的雲端硬碟配額用量。
/**
* Build a simple card that checks selected items' quota usage. Checking
* quota usage requires user-permissions, so this add-on provides a button
* to request `drive.file` scope for items the add-on doesn't yet have
* permission to access.
*
* @param e The event object passed containing contextual information about
* the Drive items selected.
* @return {Card}
*/
function onDriveItemsSelected(e) {
var builder = CardService.newCardBuilder();
// For each item the user has selected in Drive, display either its
// quota information or a button that allows the user to provide
// permission to access that file to retrieve its quota details.
e['drive']['selectedItems'].forEach(
function(item){
var cardSection = CardService.newCardSection()
.setHeader(item['title']);
// This add-on uses the recommended, limited-permission `drive.file`
// scope to get granular per-file access permissions.
// See: https://developers.google.com/drive/api/v2/about-auth
if (item['addonHasFileScopePermission']) {
// If the add-on has access permission, read and display its
// quota.
cardSection.addWidget(
CardService.newTextParagraph().setText(
"This file takes up: " + getQuotaBytesUsed(item['id'])));
} else {
// If the add-on does not have access permission, add a button
// that allows the user to provide that permission on a per-file
// basis.
cardSection.addWidget(
CardService.newTextParagraph().setText(
"The add-on needs permission to access this file's quota."));
var buttonAction = CardService.newAction()
.setFunctionName("onRequestFileScopeButtonClicked")
.setParameters({id: item.id});
var button = CardService.newTextButton()
.setText("Request permission")
.setOnClickAction(buttonAction);
cardSection.addWidget(button);
}
builder.addSection(cardSection);
});
return builder.build();
}
/**
* Callback function for a button action. Instructs Drive to display a
* permissions dialog to the user, requesting `drive.file` scope for a
* specific item on behalf of this add-on.
*
* @param {Object} e The parameters object that contains the item's
* Drive ID.
* @return {DriveItemsSelectedActionResponse}
*/
function onRequestFileScopeButtonClicked (e) {
var idToRequest = e.parameters.id;
return CardService.newDriveItemsSelectedActionResponseBuilder()
.requestFileScope(idToRequest).build();
}
/**
* Use the Advanced Drive Service
* (See https://developers.google.com/apps-script/advanced/drive),
* with `drive.file` scope permissions to request the quota usage of a
* specific Drive item.
*
* @param {string} itemId The ID of the item to check.
* @return {string} A description of the item's quota usage, in bytes.
*/
function getQuotaBytesUsed(itemId) {
try {
return Drive.Files.get(itemId,{fields: "quotaBytesUsed"})
.quotaBytesUsed + " bytes";
} catch (e) {
return "Error fetching how much quota this item uses. Error: " + e;
}
}
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上次更新時間:2025-07-31 (世界標準時間)。
[null,null,["上次更新時間:2025-07-31 (世界標準時間)。"],[[["\u003cp\u003eActions enable interactive behavior in Google Workspace add-ons, defining responses to user interactions with widgets.\u003c/p\u003e\n"],["\u003cp\u003eDrive add-ons use a specialized DriveItemsSelectedActionResponse to manage file access permissions.\u003c/p\u003e\n"],["\u003cp\u003eAdd-ons need the \u003ccode\u003ehttps://www.googleapis.com/auth/drive.file\u003c/code\u003e scope to request and utilize Drive file access.\u003c/p\u003e\n"],["\u003cp\u003eThe provided example demonstrates building a contextual Drive interface, requesting file access, and displaying quota usage upon permission grant.\u003c/p\u003e\n"]]],["Actions in Google Workspace add-ons define interactive behaviors triggered by widget interactions. Widgets use handler functions to attach actions, executing callback functions upon user interaction. These callbacks receive an event object containing interaction details and must return a specific response. Drive-specific actions allow requesting file access for selected files. The callback, triggered when a user selects a file in drive, checks if access is granted, and, if not, prompts the user for permission using `DriveItemsSelectedActionResponse`. The add-on then displays file quota information if access is granted.\n"],null,["# Drive actions\n\n[`Action`](/workspace/add-ons/concepts/actions) objects let you build interactive\nbehavior into Google Workspace add-ons. They define\nwhat happens when a user interacts with a widget (for example, a button) in\nthe add-on UI.\n\nAn action is attached to a given widget using a\n[widget handler function](/workspace/add-ons/concepts/actions#widget_handler_functions),\nwhich also defines the condition that triggers the action. When triggered, the\naction executes a designated\n[callback function](/workspace/add-ons/concepts/actions#callback_functions).\nThe callback function is passed an\n[event object](/workspace/add-ons/concepts/event-objects) that carries\ninformation about the user's client-side interactions. You must implement the\ncallback function and have it return a specific response object.\n\nFor example, say you want a button that builds and displays a new card when\nclicked. For this, you must create a new button widget and use the button widget\nhandler function\n[`setOnClickAction(action)`](/apps-script/reference/card-service/text-button#setOnClickAction(Action))\nto set a card-building [`Action`](/workspace/add-ons/concepts/actions). The\n[`Action`](/workspace/add-ons/concepts/actions) you define specifies an Apps Script\ncallback function that executes when the button is clicked. In this case, you\nimplement the callback function to build the card you want and return an\n[`ActionResponse`](/apps-script/reference/card-service/action-response)\nobject. The response object tells the add-on to display the card the callback\nfunction built.\n\nThis page describes Drive-specific widget actions you can include in your\nadd-on.\n\nDrive interactions\n------------------\n\nGoogle Workspace add-ons that extend Drive can include\nan additional Drive-specific widget action. This action requires the associated\naction [callback function](/workspace/add-ons/concepts/actions#callback_functions)\nto return a specialized response object:\n\n| Action attempted | Callback function should return |\n|-----------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------|\n| [Request file access for selected files](#request_file_access_for_selected_files) | [`DriveItemsSelectedActionResponse`](/apps-script/reference/card-service/drive-items-selected-action-response) |\n\nTo make use of these widget actions and response objects, all of the following\nmust be true:\n\n- The action is triggered while the user has one or more Drive items selected.\n- The add-on includes the `https://www.googleapis.com/auth/drive.file` [Drive scope](/workspace/add-ons/concepts/workspace-scopes#drive_scopes) in its manifest.\n\n### Request file access for selected files\n\nThe following example shows how to build a contextual interface for Google\nDrive that is triggered when the user selects one or more Drive items. The\nexample tests each item to see if the add-on has been granted access permission;\nif not, it uses a [`DriveItemsSelectedActionResponse`](/apps-script/reference/card-service/drive-items-selected-action-response)\nobject to request that permission from the user. Once permission is granted for\nan item, the add-on displays the Drive quota usage of that item. \n\n /**\n * Build a simple card that checks selected items' quota usage. Checking\n * quota usage requires user-permissions, so this add-on provides a button\n * to request `drive.file` scope for items the add-on doesn't yet have\n * permission to access.\n *\n * @param e The event object passed containing contextual information about\n * the Drive items selected.\n * @return {Card}\n */\n function onDriveItemsSelected(e) {\n var builder = CardService.newCardBuilder();\n\n // For each item the user has selected in Drive, display either its\n // quota information or a button that allows the user to provide\n // permission to access that file to retrieve its quota details.\n e['drive']['selectedItems'].forEach(\n function(item){\n var cardSection = CardService.newCardSection()\n .setHeader(item['title']);\n\n // This add-on uses the recommended, limited-permission `drive.file`\n // scope to get granular per-file access permissions.\n // See: https://developers.google.com/drive/api/v2/about-auth\n if (item['addonHasFileScopePermission']) {\n // If the add-on has access permission, read and display its\n // quota.\n cardSection.addWidget(\n CardService.newTextParagraph().setText(\n \"This file takes up: \" + getQuotaBytesUsed(item['id'])));\n } else {\n // If the add-on does not have access permission, add a button\n // that allows the user to provide that permission on a per-file\n // basis.\n cardSection.addWidget(\n CardService.newTextParagraph().setText(\n \"The add-on needs permission to access this file's quota.\"));\n\n var buttonAction = CardService.newAction()\n .setFunctionName(\"onRequestFileScopeButtonClicked\")\n .setParameters({id: item.id});\n\n var button = CardService.newTextButton()\n .setText(\"Request permission\")\n .setOnClickAction(buttonAction);\n\n cardSection.addWidget(button);\n }\n\n builder.addSection(cardSection);\n });\n\n return builder.build();\n }\n\n /**\n * Callback function for a button action. Instructs Drive to display a\n * permissions dialog to the user, requesting `drive.file` scope for a\n * specific item on behalf of this add-on.\n *\n * @param {Object} e The parameters object that contains the item's\n * Drive ID.\n * @return {DriveItemsSelectedActionResponse}\n */\n function onRequestFileScopeButtonClicked (e) {\n var idToRequest = e.parameters.id;\n return CardService.newDriveItemsSelectedActionResponseBuilder()\n .requestFileScope(idToRequest).build();\n }\n\n /**\n * Use the Advanced Drive Service\n * (See https://developers.google.com/apps-script/advanced/drive),\n * with `drive.file` scope permissions to request the quota usage of a\n * specific Drive item.\n *\n * @param {string} itemId The ID of the item to check.\n * @return {string} A description of the item's quota usage, in bytes.\n */\n function getQuotaBytesUsed(itemId) {\n try {\n return Drive.Files.get(itemId,{fields: \"quotaBytesUsed\"})\n .quotaBytesUsed + \" bytes\";\n } catch (e) {\n return \"Error fetching how much quota this item uses. Error: \" + e;\n }\n }"]]