1 files changed, 229 insertions, 0 deletions
diff --git a/tiddlers/plugin-org-gtd-agenda-widget.tid b/tiddlers/plugin-org-gtd-agenda-widget.tid
new file mode 100644
index 0000000..4749564
--- /dev/null
+++ b/tiddlers/plugin-org-gtd-agenda-widget.tid
@@ -0,0 +1,229 @@
+title: $:/plugins/local/org-gtd/agenda-widget.js
+type: application/javascript
+module-type: widget
+
+/*\
+title: $:/plugins/local/org-gtd/agenda-widget.js
+type: application/javascript
+module-type: widget
+\*/
+(function() {
+"use strict";
+
+var Widget = require("$:/core/modules/widgets/widget.js").widget,
+	org = require("$:/plugins/local/org-gtd/library.js"),
+	JUMP_STATE_TITLE = "$:/state/org-gtd/jump";
+
+var OrgGtdAgendaWidget = function(parseTreeNode,options) {
+	this.initialise(parseTreeNode,options);
+	this.parseCache = Object.create(null);
+};
+
+OrgGtdAgendaWidget.prototype = new Widget();
+OrgGtdAgendaWidget.prototype.constructor = OrgGtdAgendaWidget;
+
+function startOfDay(date) {
+	return new Date(date.getFullYear(),date.getMonth(),date.getDate()).getTime();
+}
+
+function earliestDate(task) {
+	var values = [task.scheduled,task.deadline].filter(function(value) {
+		return !isNaN(org.dateToTime(value));
+	});
+	values.sort();
+	return values[0] || "";
+}
+
+OrgGtdAgendaWidget.prototype.render = function(parent,nextSibling) {
+	this.parentDomNode = parent;
+	this.computeAttributes();
+	this.execute();
+
+	var container = this.document.createElement("div");
+	container.className = "tc-org-agenda";
+	parent.insertBefore(container,nextSibling);
+	this.domNodes.push(container);
+	this.containerNode = container;
+	this.renderAgenda();
+};
+
+OrgGtdAgendaWidget.prototype.execute = function() {
+	this.days = Math.max(1,Number(this.getAttribute("days","7")) || 7);
+};
+
+OrgGtdAgendaWidget.prototype.createButton = function(label,className,handler) {
+	var button = this.document.createElement("button");
+	button.type = "button";
+	button.className = "tc-btn-invisible " + className;
+	button.textContent = label;
+	button.addEventListener("click",handler);
+	return button;
+};
+
+OrgGtdAgendaWidget.prototype.getTasks = function() {
+	var self = this,
+		tasks = [],
+		activeTitles = Object.create(null);
+	this.wiki.allTitles().forEach(function(title) {
+		var tiddler = self.wiki.getTiddler(title),
+			text,
+			cached,
+			parsed;
+		if(!tiddler || tiddler.fields.type !== "text/x-org" || tiddler.fields["draft.of"]) {
+			return;
+		}
+		activeTitles[title] = true;
+		text = tiddler.fields.text || "";
+		cached = self.parseCache[title];
+		parsed = cached && cached.text === text ? cached.parsed : org.parse(text);
+		self.parseCache[title] = {text: text,parsed: parsed};
+		parsed.headings.forEach(function(heading) {
+			if(heading.state && heading.state !== "DONE" && heading.title) {
+				tasks.push({
+					tiddler: title,
+					title: heading.title,
+					state: heading.state,
+					level: heading.level,
+					line: heading.sourceLine,
+					scheduled: heading.scheduled,
+					deadline: heading.deadline,
+					date: earliestDate(heading)
+				});
+			}
+		});
+	});
+	Object.keys(this.parseCache).forEach(function(title) {
+		if(!activeTitles[title]) {
+			delete self.parseCache[title];
+		}
+	});
+	return tasks;
+};
+
+OrgGtdAgendaWidget.prototype.openTask = function(task,event) {
+	this.wiki.setText(JUMP_STATE_TITLE,"text",null,JSON.stringify({title: task.tiddler,line: task.line}));
+	this.dispatchEvent({
+		type: "tm-edit-tiddler",
+		param: task.tiddler,
+		tiddlerTitle: task.tiddler,
+		navigateFromTitle: this.getVariable("storyTiddler"),
+		event: event
+	});
+};
+
+OrgGtdAgendaWidget.prototype.renderTask = function(parent,task) {
+	var self = this,
+		button = this.createButton(task.title,"tc-org-agenda-task",function(event) {
+			self.openTask(task,event);
+		}),
+		state = this.document.createElement("span"),
+		source = this.document.createElement("span"),
+		meta = this.document.createElement("span"),
+		row = this.document.createElement("div"),
+		parts = [];
+	row.className = "tc-org-agenda-row";
+	state.className = "tc-org-state tc-org-state-" + task.state.toLowerCase();
+	state.textContent = task.state;
+	source.className = "tc-org-agenda-source";
+	source.textContent = task.tiddler;
+	if(task.scheduled) {
+		parts.push("计划 " + task.scheduled);
+	}
+	if(task.deadline) {
+		parts.push("截止 " + task.deadline);
+	}
+	meta.className = "tc-org-agenda-meta";
+	meta.textContent = parts.join(" · ");
+	row.appendChild(state);
+	row.appendChild(button);
+	row.appendChild(source);
+	if(parts.length) {
+		row.appendChild(meta);
+	}
+	parent.appendChild(row);
+};
+
+OrgGtdAgendaWidget.prototype.renderSection = function(title,tasks,className) {
+	var self = this,
+		section = this.document.createElement("section"),
+		heading = this.document.createElement("h2"),
+		count = this.document.createElement("span");
+	section.className = "tc-org-agenda-section " + className;
+	heading.className = "tc-org-agenda-section-title";
+	heading.textContent = title;
+	count.className = "tc-org-agenda-count";
+	count.textContent = String(tasks.length);
+	heading.appendChild(count);
+	section.appendChild(heading);
+	if(tasks.length) {
+		tasks.forEach(function(task) {
+			self.renderTask(section,task);
+		});
+	} else {
+		var empty = this.document.createElement("p");
+		empty.className = "tc-org-agenda-empty";
+		empty.textContent = "没有事项";
+		section.appendChild(empty);
+	}
+	this.containerNode.appendChild(section);
+};
+
+OrgGtdAgendaWidget.prototype.renderAgenda = function() {
+	var self = this,
+		today = startOfDay(new Date()),
+		horizonDate = new Date(today),
+		horizon,
+		groups = {overdue: [],today: [],upcoming: [],next: []},
+		toolbar = this.document.createElement("div"),
+		newButton;
+	horizonDate.setDate(horizonDate.getDate() + this.days);
+	horizon = horizonDate.getTime();
+	newButton = this.createButton("+ 新建 Org 文档","tc-org-agenda-new",function(event) {
+		var title = self.wiki.generateNewTitle("GTD Inbox");
+		self.dispatchEvent({
+			type: "tm-new-tiddler",
+			paramObject: {title: title,type: "text/x-org",text: "* TODO "},
+			navigateFromTitle: self.getVariable("storyTiddler"),
+			event: event
+		});
+	});
+	toolbar.className = "tc-org-agenda-toolbar";
+	toolbar.appendChild(newButton);
+	this.containerNode.appendChild(toolbar);
+	this.getTasks().forEach(function(task) {
+		var time = org.dateToTime(task.date);
+		if(!isNaN(time)) {
+			if(time < today) {
+				groups.overdue.push(task);
+			} else if(time === today) {
+				groups.today.push(task);
+			} else if(time <= horizon) {
+				groups.upcoming.push(task);
+			}
+		} else if(task.state === "NEXT") {
+			groups.next.push(task);
+		}
+	});
+	Object.keys(groups).forEach(function(key) {
+		groups[key].sort(function(left,right) {
+			return (left.date || "9999").localeCompare(right.date || "9999") || left.title.localeCompare(right.title,"zh-Hans");
+		});
+	});
+	this.renderSection("逾期",groups.overdue,"tc-org-agenda-overdue");
+	this.renderSection("今天",groups.today,"tc-org-agenda-today");
+	this.renderSection("未来 " + this.days + " 天",groups.upcoming,"tc-org-agenda-upcoming");
+	this.renderSection("无日期的下一步",groups.next,"tc-org-agenda-next");
+};
+
+OrgGtdAgendaWidget.prototype.refresh = function(changedTiddlers) {
+	var changedAttributes = this.computeAttributes();
+	if(Object.keys(changedAttributes).length || Object.keys(changedTiddlers).length) {
+		this.refreshSelf();
+		return true;
+	}
+	return false;
+};
+
+exports["org-gtd-agenda"] = OrgGtdAgendaWidget;
+
+})();