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/* -*- Mode: idl; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */

// XXX use strings for kind values instead of enumerated constants?


#include "nsISupports.idl"

interface calIItemBase;
interface calIDateTime;
interface calIDuration;
interface calITimezone;
interface calITimezoneProvider;

interface calIIcalProperty;
interface nsIUTF8StringEnumerator;
interface nsIInputStream;

/**
 * General notes:
 *
 * As with libical, use of getNextFoo(footype) is only valid if there have been
 * no intervening getNextFoo(otherfootype)s, or removeFoo()s, or addFoo()s. In
 * general, you want to do as little manipulation of your FooContainers as
 * possible while iterating over them.
 */
[scriptable,uuid(59132cf2-e48c-4807-ab53-779f414a7fbc)]
interface calIIcalComponent : nsISupports
{
    /**
     * The parent ical property
     */
    readonly attribute calIIcalComponent parent;

    /**
     * Access to the inner ical.js objects. Only use these if you know what you
     * are doing.
     */
    attribute jsval icalComponent;
    attribute jsval icalTimezone;

    /**
     * This is the value that an integer-valued getter will provide if
     * there is no such property on the wrapped ical structure.
     */
    const int32_t INVALID_VALUE = -1;

    /**
     * @param kind ANY, XROOT, VCALENDAR, VEVENT, etc.
     */
    calIIcalComponent getFirstSubcomponent(in AUTF8String componentType);
    calIIcalComponent getNextSubcomponent(in AUTF8String componentType);

    readonly attribute AUTF8String componentType;

    attribute AUTF8String uid;
    attribute AUTF8String prodid;
    attribute AUTF8String version;

    /**
     * PUBLISH, REQUEST, REPLY, etc.
     */
    attribute AUTF8String method;

    /**
     * TENTATIVE, CONFIRMED, CANCELLED, etc.
     */
    attribute AUTF8String status;

    attribute AUTF8String summary;
    attribute AUTF8String description;
    attribute AUTF8String location;
    attribute AUTF8String categories;
    attribute AUTF8String URL;

    attribute int32_t priority;

    attribute calIDateTime startTime;
    attribute calIDateTime endTime;
    readonly attribute calIDuration duration;
    attribute calIDateTime dueTime;
    attribute calIDateTime stampTime;

    attribute calIDateTime createdTime;
    attribute calIDateTime completedTime;
    attribute calIDateTime lastModified;

    /**
     * The recurrence ID, a.k.a. DTSTART-of-calculated-occurrence,
     * or null if this isn't an occurrence.
     */
    attribute calIDateTime recurrenceId;

    AUTF8String serializeToICS();

    /**
     * Return a string representation of this instance.
     */
    AUTF8String toString();

    /**
     * Serializes this component (and subcomponents) directly to an
     * input stream.  Typically used for performance to avoid
     * unnecessary conversions and XPConnect traversals.
     *
     * @result     an input stream which can be read to get the serialized
     *             version of this component, encoded in UTF-8.  Implements
     *             nsISeekableStream so that it can be used with
     *             nsIUploadChannel.
     */
    nsIInputStream serializeToICSStream();

    void addSubcomponent(in calIIcalComponent comp);
// If you add then remove a property/component, the referenced
// timezones won't get purged out. There's currently no client code.
//     void removeSubcomponent(in calIIcalComponent comp);

    /**
     * @param kind ANY, ATTENDEE, X-WHATEVER, etc.
     */
    calIIcalProperty getFirstProperty(in AUTF8String kind);
    calIIcalProperty getNextProperty(in AUTF8String kind);
    void addProperty(in calIIcalProperty prop);
// If you add then remove a property/component, the referenced
// timezones won't get purged out. There's currently no client code.
//     void removeProperty(in calIIcalProperty prop);

    /**
     * Timezones need special handling, as they must be
     * emitted as children of VCALENDAR, but can be referenced by
     * any sub component.
     * Adding a second timezone (of the same TZID) will remove the
     * first one.
     */
    void addTimezoneReference(in calITimezone aTimezone);

    /**
     * Returns an array of VTIMEZONE components.
     * These are the timezones that are in use by this
     * component and its children.
     */
    void getReferencedTimezones(out uint32_t aCount,
                                [array,size_is(aCount),retval] out calITimezone aTimezones);

    /**
     * Clones the component. The cloned component is decoupled from any parent.
     * @return cloned component
     */
    calIIcalComponent clone();
};

[scriptable,uuid(5b13a69c-53d3-44a0-9203-f89f7e5e1604)]
interface calIIcalProperty : nsISupports
{
    /**
     * The whole property as an ical string.
     * @exception Any libical error will be thrown as an calIError::ICS_ error.
     */
    readonly attribute AUTF8String icalString;

    /**
     * Access to the inner ical.js objects. Only use these if you know what you
     * are doing.
     */
    attribute jsval icalProperty;

    /**
     * The parent component containing this property
     */
    readonly attribute calIIcalComponent parent;

    /**
     * Return a string representation of this instance.
     */
    AUTF8String toString();

    /**
     * The value of the property as string.
     * The exception for properties of TEXT or X- type, those will be unescaped
     * when getting, and also expects an unescaped string when setting.
     * Datetime, numeric and other non-text types are represented as ical string
     */
    attribute AUTF8String value;

    /**
     * The value of the property in (escaped) ical format.
     */
    attribute AUTF8String valueAsIcalString;

    /**
     * The value of the property as date/datetime value, keeping
     * track of the used timezone referenced in the owning component.
     */
    attribute calIDateTime valueAsDatetime;

    // XXX attribute AUTF8String stringValueWithParams; ?
    readonly attribute AUTF8String propertyName;

    AUTF8String getParameter(in AUTF8String paramname);
    void setParameter(in AUTF8String paramname, in AUTF8String paramval);

    AUTF8String getFirstParameterName();
    AUTF8String getNextParameterName();

    void removeParameter(in AUTF8String paramname);
    void clearXParameters();
};

[scriptable,uuid(eda9565f-f9bb-4846-b134-1e0653b2e767)]
interface calIIcsComponentParsingListener : nsISupports
{
    /**
     * Called when the parsing has completed.
     *
     * @param rc            The result code of parsing
     * @param rootComp      The root ical component that was parsed
     */
    void onParsingComplete(in nsresult rc, in calIIcalComponent rootComp);
};

[scriptable,uuid(31e7636b-5a64-4d15-bc60-67b67cd85176)]
interface calIICSService : nsISupports
{
    /**
     * Parses an ICS string and uses the passed tzProvider instance to
     * resolve timezones not contained withing the VCALENDAR.
     *
     * @param serialized     an ICS string
     * @param tzProvider     timezone provider used to resolve TZIDs
     *                       not contained within the VCALENDAR;
     *                       if null is passed, parsing falls back to
     *                       using the timezone service
     */
    calIIcalComponent parseICS(in AUTF8String serialized,
                               in calITimezoneProvider tzProvider);

    /**
     * Asynchronously parse an ICS string
     *
     * @param serialized     an ICS string
     * @param tzProvider     timezone provider used to resolve TZIDs
     *                       not contained within the VCALENDAR;
     *                       if null is passed, parsing falls back to
     *                       using the timezone service
     * @param listener       The listener that notifies the root component
     */
    void parseICSAsync(in AUTF8String serialized,
                       in calITimezoneProvider tzProvider,
                       in calIIcsComponentParsingListener listener);

    calIIcalComponent createIcalComponent(in AUTF8String kind);
    calIIcalProperty createIcalProperty(in AUTF8String kind);
    calIIcalProperty createIcalPropertyFromString(in AUTF8String str);
    /* I wish I could write this function atop libical!
    boolean isLegalParameterValue(in AUTF8String paramKind,
                                  in AUTF8String paramValue);
    */
};

/** Libical specific interfaces */

[ptr] native icalpropertyptr(struct icalproperty_impl);
[ptr] native icalcomponentptr(struct icalcomponent_impl);
[ptr] native icaltimezoneptr(struct _icaltimezone);

[scriptable,uuid(d2fc0264-191e-435e-8ef2-b2ab1fa81ca9)]
interface calIIcalComponentLibical : calIIcalComponent
{
    [noscript,notxpcom] icalcomponentptr getLibicalComponent();
    [noscript,notxpcom] icaltimezoneptr getLibicalTimezone();
};

[scriptable,uuid(e0b9067f-0a53-4724-9c69-63599681877e)]
interface calIIcalPropertyLibical : calIIcalProperty
{
    [noscript,notxpcom] icalpropertyptr getLibicalProperty();
    [noscript,notxpcom] icalcomponentptr getLibicalComponent();
};